spec: make test pass again

Signed-off-by: Ruby Iris Juric <[email protected]>

Author: Sorixelle

spec/pebble_markdown_parser_spec.rb

@@ -22,7 +22,7 @@
 describe Jekyll::Converters::Markdown::PebbleMarkdownParser, '#convert' do
   it 'renders normal markdown properly' do
     expect(parser.convert('**Bold Text**').strip)
-      .to eql('<p><strong>Bold Text</strong></p> beebo babo')
+      .to eql('<p><strong>Bold Text</strong></p>')
   end
 
   it 'adds anchors to headers' do