doc,http,http2: add http highlight grammar

doc/api/http.md

@@ -2060,13 +2060,13 @@ added: v0.1.90
 
 **Only valid for request obtained from [`http.Server`][].**
 
-Request URL string. This contains only the URL that is
-present in the actual HTTP request. If the request is:
+Request URL string. This contains only the URL that is present in the actual
+HTTP request. If the request is (remember, each header line ends with `\r\n`
+plus a final `\r\n` after the last one indicating the end of the header):
 
 ```http
-GET /status?name=ryan HTTP/1.1\r\n
-Accept: text/plain\r\n
-\r\n
+GET /status?name=ryan HTTP/1.1
+Accept: text/plain
 ```
 
 To parse the URL into its parts:

doc/api/http2.md

@@ -3025,13 +3025,13 @@ added: v8.4.0
 
 * {string}
 
-Request URL string. This contains only the URL that is
-present in the actual HTTP request. If the request is:
+Request URL string. This contains only the URL that is present in the actual
+HTTP request. If the request is (remember, each header line ends with `\r\n`
+plus a final `\r\n` after the last one indicating the end of the header):
 
 ```http
-GET /status?name=ryan HTTP/1.1\r\n
-Accept: text/plain\r\n
-\r\n
+GET /status?name=ryan HTTP/1.1
+Accept: text/plain
 ```
 
 Then `request.url` will be:

doc/api_assets/README.md

@@ -2,14 +2,15 @@
 
 ## highlight.pack.js
 
-_Generated by [highlightjs.org/download][] on 2020-05-16._
+_Generated by [highlightjs.org/download][] on 2020-06-07._
 
 Grammars included in the custom bundle:
 
 * Bash
 * C
 * C++
 * CoffeeScript
+* HTTP
 * JavaScript
 * JSON
 * Markdown

doc/api_assets/hljs.css

@@ -7,6 +7,7 @@
   color: #333;
 }
 
+.hljs-attribute,
 .hljs-keyword {
   color: #338;
 }