[FIX] Fix the English version of Github page (PKUFlyingPig#650)

Author: PKUFlyingPig

docs/必学工具/Github.en.md docs/必学工具/GitHub.en.mddocs/必学工具/Github.en.md renamed to docs/必学工具/GitHub.en.md

@@ -14,4 +14,4 @@ If you want to keep up with some interesting open-source projects on GitHub, I h
 
 I believe GitHub's success is due to the "one for all, all for one" spirit of open source and the joy of sharing knowledge. If you also want to become the next revered open-source giant or the author of a project with tens of thousands of stars, then transform your ideas that spark during development into code and showcase them on GitHub.
 
-However, it's important to note that the open-source community is not lawless. Many open-source softwares are not meant for arbitrary copying, distribution, or even sale. Understanding various [open-source licenses](https://www.runoob.com/w3cnote/open-source-license.html) and complying with them is not only a legal requirement but also the responsibility of every member of the open-source community.
+However, it's important to note that the open-source community is not lawless. Many open-source softwares are not meant for arbitrary copying, distribution, or even sale. Understanding various [open-source licenses](https://www.runoob.com/w3cnote/open-source-license.html) and complying with them is not only a legal requirement but also the responsibility of every member of the open-source community.