fixed version

made version in "plumed config" consistent with the change
done in 2e4cee92

src/maketools/update-config-txt.sh

@@ -23,9 +23,8 @@ echo "version long $(
 
 echo "version git $(
   if test -d ../../.git && hash git 2> /dev/null ; then
-# describe --tags gives a nice name
 # in case it does not work, fallback to normal hash (12 char long)
-    git describe --long --tags --dirty --always || git rev-parse  --short=12 HEAD
+    git describe --long --dirty --always || git rev-parse  --short=12 HEAD
   else
     echo "Unknown"
   fi