Ensure man1 POD files start with openssl-

Commit b6b66573 (PR #9679) renamed most POD files. This change causes
find-doc-nits to flag misnamed files.
Also fix the two misnamed files that it found.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10000)

util/find-doc-nits

@@ -667,6 +667,14 @@ if ( $opt_n ) {
             check($_);
         }
     }
+
+    # If not given args, check that all man1 commands are named properly.
+    if ( scalar @ARGV == 0 ) {
+        foreach (glob('doc/man1/*.pod')) {
+            next if /CA.pl/ || /openssl.pod/;
+            err("$_ doesn't start with openssl-") unless /openssl-/;
+        }
+    }
 }
 
 if ( $opt_u || $opt_v) {