update en/device-dev/subsystems/subsys-build-all.md.

Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>
Signed-off-by: NAnnie_wang <annie.wangli@huawei.com>

en/device-dev/subsystems/subsys-build-all.md

@@ -323,7 +323,7 @@ Then, run the build commands in command line (CLI) mode or hb mode.
         --compact-mode        compatible with standard build system set to false if we use build.sh as build entrance
         --gn-args GN_ARGS     specifies gn build arguments, eg: --gn-args="foo="bar" enable=true blah=7"
         --keep-ninja-going    keeps ninja going until 1000000 jobs fail
-        --build-only-gn       only do gn parse, donot run ninja
+        --build-only-gn       only do gn parse, do not run ninja
         --log-level LOG_LEVEL
                               specifies the log level during compilationyou can select three levels: debug, info and error
         --fast-rebuild        it will skip prepare, preloader, gn_gen steps so we can enable it only when there is no change