Update punctuation

.github/ISSUE_TEMPLATE.md

@@ -1,4 +1,4 @@
-Thanks for looking to open an issue for this project!
+Thanks for looking to open an issue for this project.
 
-If you are opening an issue to add a new entry, please consider opening a pull request instead!
+If you are opening an issue to suggest adding a new entry, please consider opening a pull request instead!