Fix documentation typos

Author: griggt

docs/_docs/reference/contextual/derivation-macro.md

@@ -35,8 +35,8 @@ inline given derived[T]: (m: Mirror.Of[T]) => Eq[T] = ???
 ```
 
 Note, that since a type is used in a subsequent stage it will need to be lifted
-to a `Type` by using the corresponding context bound. Also, not that we can
-summon the quoted `Mirror` inside the body of the `derived` this we can omit it
+to a `Type` by using the corresponding context bound. Also, note that we can
+summon the quoted `Mirror` inside the body of the `derived` thus we can omit it
 from the signature. The body of the `derived` method is shown below: