doc refactor: url

doc/api/url.markdown

@@ -1,4 +1,4 @@
-## URL
+# URL
 
 This module has utilities for URL resolution and parsing.
 Call `require('url')` to use it.
@@ -45,7 +45,7 @@ string will not be in the parsed object. Examples are shown for the URL
 
 The following methods are provided by the URL module:
 
-### url.parse(urlStr, [parseQueryString], [slashesDenoteHost])
+## url.parse(urlStr, [parseQueryString], [slashesDenoteHost])
 
 Take a URL string, and return an object.
 
@@ -57,7 +57,7 @@ Pass `true` as the third argument to treat `//foo/bar` as
 `{ host: 'foo', pathname: '/bar' }` rather than
 `{ pathname: '//foo/bar' }`. Defaults to `false`.
 
-### url.format(urlObj)
+## url.format(urlObj)
 
 Take a parsed URL object, and return a formatted URL string.
 
@@ -75,6 +75,6 @@ Take a parsed URL object, and return a formatted URL string.
 * `search` is treated the same with or without the leading `?` (question mark)
 * `hash` is treated the same with or without the leading `#` (pound sign, anchor)
 
-### url.resolve(from, to)
+## url.resolve(from, to)
 
 Take a base URL, and a href URL, and resolve them as a browser would for an anchor tag.