docs/CONTRIBUTING: Fix typo in commit message format
`<title>` is misleading as the first line of the commit message itself
is the title. We mean to indicate the area of the codebase the commit
makes changes to.
@@ -48,7 +48,7 @@ codebase should be kept as separate commits.
### Commit Format
```
-<title>: <description of changes>
+<area>: <description of changes>
Detailed information about the commit message goes here
```
