docs: improving typos in ISSUE_TEMPLATE files

Author: ersachin3112

.github/ISSUE_TEMPLATE/SUPPORT.md

@@ -1,6 +1,6 @@
 ---
 name: 🆘 Support, Help, and Advice
-about: 👉🏽 Need support, help, or advice? Don't open an issue! Head to https://github.com/webpack/webpack/discussions or StackOverflow
+about: 👉🏽 Need support, help, or advice? Don't open an issue! Head to https://github.com/webpack/webpack/discussions or Stack Overflow
 ---
 
 Hey there! 👋
@@ -10,6 +10,6 @@ If you need support, help, or advice then this is not the right place to ask.
 Please visit one of the following instead:
 
 - [GitHub Discussions](https://github.com/webpack/webpack/discussions)
-- [StackOverflow](https://stackoverflow.com/questions/tagged/webpack)
+- [Stack Overflow](https://stackoverflow.com/questions/tagged/webpack)
 
 Thanks for understanding!