Merge pull request #389 from viralpraxis/nitpick-fix-default-rev

Nit: replace obsolete master with zeitgeisty main

Author: mbj

README.md

@@ -114,7 +114,7 @@ Unparser currently successfully round trips almost all ruby code around. Using R
 If there is a non round trippable example that is NOT subjected to known [Limitations](#limitations).
 please report a bug.
 
-On CI unparser is currently tested against rubyspec with minor [excludes](https://github.com/mbj/unparser/blob/master/spec/integrations.yml).
+On CI unparser is currently tested against rubyspec with minor [excludes](https://github.com/mbj/unparser/blob/main/spec/integrations.yml).
 
 Limitations:
 ------------

unparser.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |gem|
 
   gem.metadata = {
     'bug_tracker_uri'       => 'https://github.com/mbj/unparser/issues',
-    'changelog_uri'         => 'https://github.com/mbj/unparser/blob/master/Changelog.md',
+    'changelog_uri'         => 'https://github.com/mbj/unparser/blob/main/Changelog.md',
     'funding_uri'           => 'https://github.com/sponsors/mbj',
     'source_code_uri'       => 'https://github.com/mbj/unparser',
     'rubygems_mfa_required' => 'true'