Update README.en.md: remove superfluous backtick

Co-authored-by: Stan Ulbrych <stanulbrych@gmail.com>

Author: m-aciek

README.en.md

@@ -33,7 +33,7 @@ for example: `uvx potodo`.
 If you are interested in the core articles, use filtering. For example:
 
 ```
-$ uvx potodo --exclude '**/*' '!tutorial/*' '!bugs.po' '!library/functions.po'`
+$ uvx potodo --exclude '**/*' '!tutorial/*' '!bugs.po' '!library/functions.po'
 1 directory  99.68% done
 └── python-docs-pl/  99.68% done
     ├── library/  98.61% done