Update src/stabilization_guide.md

Co-Authored-By: rajcspsg <[email protected]>

Author: mark-i-m

src/stabilization_guide.md

@@ -64,7 +64,7 @@ Here is a general guide to how to stabilize a feature -- every feature
 is different, of course, so some features may require steps beyond 
 what this guide talks about.
 
-Note: Before we stabilize any feature, it is rule that it should appear
+Note: Before we stabilize any feature, it's the rule that it should appear
 in the documentation.
 
 ### Updating the feature-gate listing
@@ -178,4 +178,4 @@ Places that may need updated documentation:
 [rust-lang/rust#32409]:https://github.com/rust-lang/rust/issues/32409
 [The Reference]: https://github.com/rust-lang-nursery/reference
 [The Book]: https://github.com/rust-lang/book
-[Rust by Example]: https://github.com/rust-lang/rust-by-example
+[Rust by Example]: https://github.com/rust-lang/rust-by-example