Fixes for Windows comparable build script and doc update

Signed-off-by: Andrew Leonard <anleonar@redhat.com>

tooling/reproducible/repro_common.sh

@@ -78,10 +78,7 @@ function expandJDK() {
   rm -rf "${JDK_ROOT}_CP"
 }
 
-# Process SystemModules classes to remove ModuleHashes$Builder differences
-# due to "hash" differences caused by:
-# - Windows&Mac Signatures for "Reproducible Builds"
-# - "Vendor String" differences for "Comparable Builds"
+# Process SystemModules classes to remove ModuleHashes$Builder differences due to Signatures
 #   1. javap
 #   2. search for line: // Method jdk/internal/module/ModuleHashes$Builder.hashForModule:(Ljava/lang/String;[B)Ljdk/internal/module/ModuleHashes$Builder;
 #   3. followed 3 lines later by: // String <module>