Also strip punctuation from aria label

Author: khiga8

lib/erblint-github/linters/github/accessibility/avoid_generic_link_text_counter.rb

@@ -122,7 +122,7 @@ def banned_text?(text)
           end
 
           def valid_accessible_name?(aria_label, text)
-            aria_label.downcase.include?(stripped_text(text))
+            stripped_text(aria_label).include?(stripped_text(text))
           end
 
           def extract_ruby_node(source)

test/linters/accessibility/avoid_generic_link_text_counter_test.rb

@@ -83,6 +83,7 @@ def test_flags_when_aria_label_does_not_include_visible_link_text
   def test_does_not_flag_when_aria_label_includes_visible_link_text
     @file = <<~ERB
       <a aria-label="Learn more about GitHub Sponsors.">Learn more.</a>
+      <a aria-label="Learn more about GitHub Sponsors.">Learn more  </a>
     ERB
     @linter.run(processed_source)