Add the missing bang (!) to execute external command, otherwise it does not
work.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
# It can be used from a shell:
# tools/reformat.py -i -d '-' -s 8 <boards.cfg >boards0.cfg && mv boards0.cfg boards.cfg
# It can directly be invoked from vim:
-# :%tools/reformat.py -i -d '-' -s 8
+# :%!tools/reformat.py -i -d '-' -s 8
#
# Status, Arch, CPU:SPLCPU, SoC, Vendor, Board name, Target, Options, Maintainers
###########################################################################################################