Add HTTP version in responses in HTTP header glossary page (#41975)

Add HTTP version in HTTP responses

In the HTTP header glossary page there are two HTTP response examples, but they are missing the HTTP version. This commit adds the version to produce a correct HTTP response message.

Author: ema-pe

files/en-us/glossary/http_header/index.md

@@ -24,14 +24,14 @@ Host: example.com
 Redirects have mandatory headers ({{HTTPHeader("Location")}}):
 
 ```http
-302 Found
+HTTP/1.1 302 Found
 Location: /NewPage.html
 ```
 
 A typical set of headers:
 
 ```http
-304 Not Modified
+HTTP/1.1 304 Not Modified
 Access-Control-Allow-Origin: *
 Age: 2318192
 Cache-Control: public, max-age=315360000