libcurl: improved "file a bug about" links

libcurl/c/_CURLINFO_template.html

@@ -24,7 +24,7 @@
 <br><a href="easy_getinfo_options.html">info options</a>
 <br><a href="easy_setopt_options.html">easy options</a>
 <br><a href="multi_setopt_options.html">multi options</a>
-<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml" target="_new">File a bug about this page</a>
+<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml&amp;source=CURL_URL" target="_new">File a bug about this page</a>
 <br><a href="https://github.com/curl/curl/blob/master/docs/libcurl/opts/@[email protected]" target="_new">View manpage source</a>
 </div>
 

libcurl/c/_CURLMOPT_template.html

@@ -23,7 +23,7 @@
 <b>Related:</b>
 <br><a href="easy_setopt_options.html">easy options</a>
 <br><a href="multi_setopt_options.html">multi options</a>
-<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml" target="_new">File a bug about this page</a>
+<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml&amp;source=CURL_URL" target="_new">File a bug about this page</a>
 <br><a href="https://github.com/curl/curl/blob/master/docs/libcurl/opts/@[email protected]" target="_new">View manpage source</a>
 </div>
 

libcurl/c/_CURLOPT_template.html

@@ -24,7 +24,7 @@
 <br><a href="easy_setopt_options.html">easy options</a>
 <br><a href="easy_getinfo_options.html">getinfo options</a>
 <br><a href="multi_setopt_options.html">multi options</a>
-<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml" target="_new">File a bug about this page</a>
+<br><a href="https://github.com/curl/curl/issues/new?title=@template@%20manpage&amp;labels=documentation&amp;template=docs.yml&amp;source=CURL_URL" target="_new">File a bug about this page</a>
 <br><a href="https://github.com/curl/curl/blob/master/docs/libcurl/opts/@[email protected]" target="_new">View manpage source</a>
 </div>
 

libcurl/c/_CURLSHOPT_template.html

@@ -25,7 +25,7 @@
 <br><a href="easy_getinfo_options.html">getinfo options</a>
 <br><a href="multi_setopt_options.html">multi options</a>
 <br><a href="curl_share_setopt.html">share options</a>
-<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml" target="_new">File a bug about this page</a>
+<br><a href="https://github.com/curl/curl/issues/new?title=@template%20manpage:@&amp;labels=documentation&amp;template=docs.yml&amp;source=CURL_URL" target="_new">File a bug about this page</a>
 <br><a href="https://github.com/curl/curl/blob/master/docs/libcurl/opts/@[email protected]" target="_new">View manpage source</a>
 </div>
 

libcurl/c/libcurl-related.t

@@ -4,6 +4,6 @@
 <br><a href="easy_getinfo_options.html">getinfo options</a>
 <br><a href="multi_setopt_options.html">multi options</a>
 <br><a href="symbols-in-versions.html">Symbols</a>
-<br><a href="https://github.com/curl/curl/issues/new?title=BUG_TITLE&amp;labels=documentation&amp;template=docs.yml" target="_new">File a bug about this page</a>
+<br><a href="https://github.com/curl/curl/issues/new?title=BUG_TITLE&amp;labels=documentation&amp;template=docs.yml&amp;source=RAW_FILE" target="_new">File a bug about this page</a>
 <br><a href="https://github.com/curl/curl/blob/master/docs/libcurl/RAW_FILE" target="_new">View manpage source</a>
 </div>