Fix build and cross link to algorithms

Author: meacer

fetch.bs

@@ -3259,7 +3259,8 @@ through TLS using ALPN. The protocol cannot be spoofed through HTTP requests in
 URLs</a> to attempt to fetch them over <a>potentially trustworthy URLs</a>. If an upgraded request
 fails with a network error, it is retried over the original URL.
 
-<p>The HTTPS upgrading algorithm consists of upgrade and fallback algorithms.
+<p>The HTTPS upgrading algorithm consists of <a>upgrade an HTTP request</a> and <a>HTTPS upgrade
+fallback</a> algorithms.
 
 <div algorithm>
 <h4 id=https-upgrades-upgrade>HTTPS upgrade algorithm</h4>
@@ -4540,8 +4541,9 @@ steps:
   <p>Optionally, run <a>upgrade an HTTP request</a> algorithm on <var>request</var>, if appropriate</a>.
 
   <p class=note>HTTPS upgrading only applies to requests with <a>HTTP(S) scheme</a>s, but it's done
-  in <a>main fetch</a> instead of <a>HTTP fetch</a> to ensure that <a>upgrade a mixed content</a>
-  step runs next and applies to the upgraded request.
+  in <a>main fetch</a> instead of <a>HTTP fetch</a> to ensure that <a>upgrade a mixed content
+  <var>request</var> to a potentially trustworthy URL, if appropriate</a> step runs next and applies
+  to the upgraded request.
 
  <li><p><a>Upgrade a mixed content <var>request</var> to a potentially trustworthy URL, if appropriate</a>.