doc: use colon consistently in assert.md

PR-URL: #17463
Reviewed-By: Gireesh Punathil <[email protected]>
Reviewed-By: Tobias Nießen <[email protected]>
Reviewed-By: Richard Lau <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Daniel Bevenius <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Jon Moss <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>

Author: Trott

doc/api/assert.md

@@ -435,13 +435,13 @@ assert.notDeepEqual(obj1, obj1);
 // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
 
 assert.notDeepEqual(obj1, obj2);
-// OK, obj1 and obj2 are not deeply equal
+// OK: obj1 and obj2 are not deeply equal
 
 assert.notDeepEqual(obj1, obj3);
 // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
 
 assert.notDeepEqual(obj1, obj4);
-// OK, obj1 and obj4 are not deeply equal
+// OK: obj1 and obj4 are not deeply equal
 ```
 
 If the values are deeply equal, an `AssertionError` is thrown with a `message`