Fix trailing whitespace

Author: christhompson

fetch.bs

@@ -3289,7 +3289,7 @@ steps:
   <li><p>If <var>request</var>'s <code>https-upgrade-fallback-url</code> is non-null, clear the
   <code>https-upgrade</code> and <code>https-upgrade-fallback-url</code> flags and return.
 
-  <p class="note">This is a fallback request that shouldn't be upgraded again. 
+  <p class="note">This is a fallback request that shouldn't be upgraded again.
 
   <li><p>Otherwise, upgrade the request by setting the following fields:
     <ul>
@@ -3327,7 +3327,7 @@ To run <dfn>HTTPS upgrade fallback</dfn> given a <a for=/>request</a>
 
 <p class=note>
 User agents may implement an optional fast-fallback path by canceling slow fetches on upgraded
-requests and quickly initiate a fallback http load. 
+requests and quickly initiate a fallback http load.
 
 </div>
 
@@ -3336,7 +3336,7 @@ requests and quickly initiate a fallback http load.
 <div id=example-https-upgrade-good-https class=example>
  <p>
  <code>a.com</code> serves both <code>http://a.com</code> and <code>https://a.com</code>.
- An eligible request to <code>http://a.com</code> will be upgraded to <code>https://a.com</code>. 
+ An eligible request to <code>http://a.com</code> will be upgraded to <code>https://a.com</code>.
 </div>
 
 <div id=example-https-upgrade-bad-https class=example>