Replace <see langword="IntPtr" /> tags (dotnet#3977)

Author: nxtn

xml/System.Runtime.InteropServices/SafeHandle.xml

@@ -405,7 +405,7 @@
       <Parameters />
       <Docs>
         <summary>Returns the value of the <see cref="F:System.Runtime.InteropServices.SafeHandle.handle" /> field.</summary>
-        <returns>An <see langword="IntPtr" /> representing the value of the <see cref="F:System.Runtime.InteropServices.SafeHandle.handle" /> field. If the handle has been marked invalid with <see cref="M:System.Runtime.InteropServices.SafeHandle.SetHandleAsInvalid" />, this method still returns the original handle value, which can be a stale value.</returns>
+        <returns>An <see cref="T:System.IntPtr" /> representing the value of the <see cref="F:System.Runtime.InteropServices.SafeHandle.handle" /> field. If the handle has been marked invalid with <see cref="M:System.Runtime.InteropServices.SafeHandle.SetHandleAsInvalid" />, this method still returns the original handle value, which can be a stale value.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[  
   

xml/System.Speech.Synthesis.TtsEngine/SpeechEventInfo.xml

@@ -710,8 +710,8 @@ override public void Speak (TextFragment [] frags, IntPtr wfx, ITtsEngineSite si
         <ReturnType>System.Int16</ReturnType>
       </ReturnValue>
       <Docs>
-        <summary>Returns the data type of the object pointed to by the <see langword="IntPtr" /> returned by the <see cref="P:System.Speech.Synthesis.TtsEngine.SpeechEventInfo.Param2" /> parameter on the current <see cref="T:System.Speech.Synthesis.TtsEngine.SpeechEventInfo" /> object.</summary>
-        <value>A <see langword="short" /> value corresponding to a member of the <see cref="T:System.Speech.Synthesis.TtsEngine.EventParameterType" /> enumeration and indicating the data type of the object pointed to by the <see langword="IntPtr" /> returned by the <see cref="P:System.Speech.Synthesis.TtsEngine.SpeechEventInfo.Param2" /> parameter and used as the second argument for the constructor of the current <see cref="T:System.Speech.Synthesis.TtsEngine.SpeechEventInfo" /> object.</value>
+        <summary>Returns the data type of the object pointed to by the <see cref="T:System.IntPtr" /> returned by the <see cref="P:System.Speech.Synthesis.TtsEngine.SpeechEventInfo.Param2" /> parameter on the current <see cref="T:System.Speech.Synthesis.TtsEngine.SpeechEventInfo" /> object.</summary>
+        <value>A <see langword="short" /> value corresponding to a member of the <see cref="T:System.Speech.Synthesis.TtsEngine.EventParameterType" /> enumeration and indicating the data type of the object pointed to by the <see cref="T:System.IntPtr" /> returned by the <see cref="P:System.Speech.Synthesis.TtsEngine.SpeechEventInfo.Param2" /> parameter and used as the second argument for the constructor of the current <see cref="T:System.Speech.Synthesis.TtsEngine.SpeechEventInfo" /> object.</value>
         <remarks>
           <format type="text/markdown"><![CDATA[  
   

xml/System.Speech.Synthesis.TtsEngine/TtsEngineSsml.xml

@@ -168,7 +168,7 @@ public static Dictionary<Uri, Stream> _aLexicons = new Dictionary<Uri, Stream>()
         <param name="speakOutputFormat">Valid member of the <see cref="T:System.Speech.Synthesis.TtsEngine.SpeakOutputFormat" /> enumeration indicating the type of requested audio output format.</param>
         <param name="targetWaveFormat">A pointer to a <see langword="struct" /> containing detail setting for the audio format type requested by the <paramref name="speakOutputFormat" /> argument.</param>
         <summary>Returns the best matching audio output supported by a given synthesize engine response to a request to the synthesizer engine for the support of a particular output format.</summary>
-        <returns>Returns a valid <see langword="IntPtr" /> instance referring to a <see langword="struct" /> containing detailed information about the output format.</returns>
+        <returns>Returns a valid <see cref="T:System.IntPtr" /> instance referring to a <see langword="struct" /> containing detailed information about the output format.</returns>
         <remarks>
           <format type="text/markdown"><![CDATA[  
   
@@ -317,7 +317,7 @@ public static Dictionary<Uri, Stream> _aLexicons = new Dictionary<Uri, Stream>()
       </Parameters>
       <Docs>
         <param name="fragment">An array of <see cref="T:System.Speech.Synthesis.TtsEngine.TextFragment" /> instances containing the text to be rendered into speech.</param>
-        <param name="waveHeader">An <see langword="IntPtr" /> pointing to a structure containing audio output format.</param>
+        <param name="waveHeader">An <see cref="T:System.IntPtr" /> pointing to a structure containing audio output format.</param>
         <param name="site">A reference to an <see cref="T:System.Speech.Synthesis.TtsEngine.ITtsEngineSite" /> interface passed in by the platform infrastructure to allow access to the infrastructure resources.</param>
         <summary>Renders specified <see cref="T:System.Speech.Synthesis.TtsEngine.TextFragment" /> array in the specified output format.</summary>
         <remarks>

xml/System.Threading/WaitHandle.xml

@@ -403,7 +403,7 @@ Application code does not call this method; it is automatically invoked during g
       </ReturnValue>
       <Docs>
         <summary>Gets or sets the native operating system handle.</summary>
-        <value>An <see langword="IntPtr" /> representing the native operating system handle. The default is the value of the <see cref="F:System.Threading.WaitHandle.InvalidHandle" /> field.</value>
+        <value>An <see cref="T:System.IntPtr" /> representing the native operating system handle. The default is the value of the <see cref="F:System.Threading.WaitHandle.InvalidHandle" /> field.</value>
         <remarks>
           <format type="text/markdown"><![CDATA[