docs: fix phrasing in readme

Author: 56kyle

README.md

@@ -25,7 +25,7 @@
 <!-- badges-end -->
 
 <h4 align="center">
-⭐ Star us on <a href="https://github.com/robust-python/cookiecutter-robust-python/">GitHub</a> — it motivates us a lot and helps to pay the rent!
+⭐ Star us on <a href="https://github.com/robust-python/cookiecutter-robust-python/">GitHub</a> — it motivates us a lot and helps to pay rent!
 </h4>
 
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