Remove markdown links from HTML comments in issue templates

HTML comments aren't rendered, so markdown link syntax is irrelevant
inside them, and more confusing than useful.

Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/7632)

.github/ISSUE_TEMPLATE.md

@@ -2,8 +2,8 @@
 NOTE:
 
     If you're asking about how to use OpenSSL, this isn't the right 
-    forum.  Please see our
-    [User Support resources](https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md)
+    forum.  Please see our User Support resources:
+    https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md
 
 If relevant, please remember to tell us in what OpenSSL version you
 found the issue.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -10,8 +10,8 @@ Thank you for your bug report.
 NOTE:
 
     If you're asking about how to use OpenSSL, this isn't the right 
-    forum.  Please see our
-    [User Support resources](https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md)
+    forum.  Please see our User Support resources:
+    https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md
 
 Please remember to tell us in what OpenSSL version you found the issue.
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -10,8 +10,8 @@ Thank you for your feature request.
 NOTE:
 
     If you're asking about how to use OpenSSL, this isn't the right 
-    forum.  Please see our
-    [User Support resources](https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md)
+    forum.  Please see our User Support resources:
+    https://github.com/openssl/openssl/blob/master/.github/SUPPORT.md
 
 Please remember to put ``` lines before and after any commands plus
 output and code, like this: