Prevent trailing space in CLI usage docs generation (#8578)

automerge

docs/build-cli-usage.sh

@@ -3,7 +3,7 @@ set -e
 
 cd "$(dirname "$0")"
 
-usage=$(cargo -q run -p solana-cli -- -C ~/.foo --help | sed 's|'"$HOME"'|~|g')
+usage=$(cargo -q run -p solana-cli -- -C ~/.foo --help | sed -e 's|'"$HOME"'|~|g' -e 's/[[:space:]]\+$//')
 
 out=${1:-src/cli/usage.md}
 
@@ -29,6 +29,6 @@ in_subcommands=0
 while read -r subcommand rest; do
   [[ $subcommand == "SUBCOMMANDS:" ]] && in_subcommands=1 && continue
   if ((in_subcommands)); then
-      section "$(cargo -q run -p solana-cli -- help "$subcommand" | sed 's|'"$HOME"'|~|g')" "####" >> "$out"
+      section "$(cargo -q run -p solana-cli -- help "$subcommand" | sed -e 's|'"$HOME"'|~|g' -e 's/[[:space:]]\+$//')" "####" >> "$out"
   fi
 done <<<"$usage">>"$out"