tidy-up: update MS links, allow long URLs via checksrc

- update Microsoft documentation links.
  (also drop language designator where present.)

- checksrc: allow longer than 78 character lines if they
  contain a https URL. To make these links easier to use and parse.

- merge links that were split into two lines.

Closes #18626

scripts/checksrc.pl

@@ -516,7 +516,7 @@ sub scanfile {
         }
 
         # detect long lines
-        if(length($l) > $max_column) {
+        if(length($l) > $max_column && $l !~ / https:\/\//) {
             checkwarn("LONGLINE", $line, length($l), $file, $l,
                       "Longer than $max_column columns");
         }