base: Add missing ']' in version ID

Change-Id: I73ac530fde2fff29022aa800f4de925709d9c2f5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/55184
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

src/base/version.cc

@@ -32,6 +32,6 @@ namespace gem5
 /**
  * @ingroup api_base_utils
  */
-const char *gem5Version = "[DEVELOP-FOR-v22.0";
+const char *gem5Version = "[DEVELOP-FOR-v22.0]";
 
 } // namespace gem5