TextEditor: Add button to match regular expression during search

Author: https://github.com/lnzero1dev
Commit: 3b7884ee8a
Pull-request: https://github.com/SerenityOS/serenity/pull/4103
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/linusg ✅

DevTools/HackStudio/ProjectFile.cpp

@@ -35,7 +35,7 @@ ProjectFile::ProjectFile(const String& name)
 {
 }
 
-const GUI::TextDocument& ProjectFile::document() const
+GUI::TextDocument& ProjectFile::document() const
 {
     if (!m_document) {
         m_document = CodeDocument::create(LexicalPath(m_name));