Fix misinformation about being able to omit the number before the comma

in regexp repeat ranges in chapter 9.

Author: marijnh

09_regexp.txt

@@ -252,9 +252,9 @@ console.log(dateTime.test("30-1-2003 8:45"));
 // → true
 ----
 
-You can also specify open-ended ((range))s when using ((curly
-braces)) by omitting the number on either side of the comma. So
-`{,5}` means zero to five times, and `{5,}` means five or more times.
+You can also specify open-ended ((range))s when using ((curly braces))
+by omitting the number after the comma. So `{5,}` means five or more
+times.
 
 == Grouping subexpressions ==
 

html/errata.html

@@ -38,6 +38,11 @@ <h2>Chapter 2</h2>
 
 <h2>Chapter 9</h2>
 
+<p><strong>Page 157</strong> (Repeating Parts of a Pattern): The
+paragraph at the top of the page claims that `{,5}` is equivalent to
+`{0,5}` in a regular expression. This is not the case (you have to
+include the zero).</p>
+
 <p><strong>Page 159</strong> (The Date Type¹):
 The <code>findDate</code> function produces the wrong months. The
 second argument given to <code>new Date</code> should