[Docs] : Fix typos in docs (#1960)

docs/snippets/snippet-intro.mdx

@@ -1,4 +1,4 @@
 One of the core principles of software development is DRY (Don't Repeat
-Yourself). This is a principle that apply to documentation as
+Yourself). This is a principle that applies to documentation as
 well. If you find yourself repeating the same content in multiple places, you
 should consider creating a custom snippet to keep your content in sync.