docs: Update `assert` module docs

doc/api/assert.markdown

@@ -7,7 +7,7 @@ access it with `require('assert')`.
 
 Throws an exception that displays the values for `actual` and `expected` separated by the provided operator.
 
-### assert.ok(value, [message])
+### assert(value, message), assert.ok(value, [message])
 
 Tests if value is a `true` value, it is equivalent to `assert.equal(true, value, message);`