Update CHANGELOG.rdoc (ctran#664)

Add opening parenthesis

Author: drwl

CHANGELOG.rdoc

@@ -8,7 +8,7 @@
 
 == 3.0.0
 * Added `--models` CLI option fixing issue #563 (#647)
-* Added `--additional_file_patterns` option for additional file patterns (#633) #636) #637)
+* Added `--additional_file_patterns` option for additional file patterns (#633) (#636) (#637)
 * Refactored CLI parser (#646)
 * Fixed BigDecimal.new deprecation warning (#634)
 * Fixed annotations for columns with long data types (#622)