Added formatting rules for contributing.

CONTRIBUTING.md

@@ -9,4 +9,26 @@ Contributing is simple enough, just make sure to try and follow these guidelines
 5. Try to limit yourself to ONE alternative per Issue. Pull Requests are OK to have multiple additions.
 6. Check to see if the alternative you want added already exists in the guide.
 
-If you submitted a change that made it into the guide but don't have your Reddit or GitHub username on the CONTRIBUTORS.md list, let me know! Sometimes I forget. Alternatively, if your username is on the list and you do *not* want it there, let me know.
+If you submitted a change that made it into the guide but don't have your Reddit or GitHub username on the [CONTRIBUTORS.md](https://github.com/tycrek/degoogle/blob/master/CONTRIBUTORS.md) list, let me know! Sometimes I forget. Alternatively, if your username is on the list and you do *not* want it there, let me know.
+
+## Formatting
+
+To keep the guide consistent & clean, try to follow these formatting rules:
+
+1. The alternative entry must be **indented with two spaces** before the hyphen.
+2. Use `[square brackets](regular brackets)` for links instead of referenced links `[square brackets][1]`
+3. Separate the link and the description with **space, hypen, space**.
+4. If applicable, add an "eyes" disclaimer. Eyes disclaimers must be in bold. The number and "eyes" are connected with a hyphen.
+5. Try to avoid spelling mistakes. If they show up I can always fix them.
+
+**Sample**
+
+```markdown
+- Google Service
+  - [Alternative Name](https://example.org) - A brief description of the alternative.
+  - [Another one](https://example.com) - **9-eyes** - If applicable, mention paid plans.
+```
+
+- Google Service
+  - [Alternative Name](https://alternative.link) - A brief description of the alternative.
+  - [Another one](https://example.com) - **9-eyes** - If applicable, mention paid plans.