Add missing space after version

Author: brondani

tools/projmgr/src/ProjMgr.cpp

@@ -1247,7 +1247,7 @@ bool ProjMgr::ValidateCreatedFor(const string& createdFor) {
           return true;
         } else {
           const string msg = "'created-for' in file " + m_csolutionFile + " specifies a minimum version "
-            + version + "(current version " + currentVersion + ")";
+            + version + " (current version " + currentVersion + ")";
           if (m_rpcMode) {
             ProjMgrLogger::Get().Warn(msg);
             return true;