scripts: west_commands: build: fix syntax error in west build --help

There is an extra close bracket after board revision. Remove it.

Signed-off-by: Chase Philport <cproo12@pm.me>

Author: Chase Philport

scripts/west_commands/build.py

@@ -27,7 +27,7 @@
 BUILD_INFO_LOG = 'build_info.yml'
 
 BUILD_USAGE = '''\
-west build [-h] [-b BOARD[@REV]]] [-d BUILD_DIR]
+west build [-h] [-b BOARD[@REV]] [-d BUILD_DIR]
            [-S SNIPPET] [--shield SHIELD]
            [-t TARGET] [-p {auto, always, never}] [-c] [--cmake-only]
            [--cmake-opt CMAKE_OPT] [-n] [-o BUILD_OPT] [-f]