fix typo

acme.sh

@@ -939,13 +939,13 @@ _post() {
   elif _exists "wget" ; then
     _debug "WGET" "$WGET"
     if [ "$needbase64" ] ; then
-      if [ "$httpmethod"="POST" ] ; then
+      if [ "$httpmethod" = "POST" ] ; then
         response="$($WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$url" 2>"$HTTP_HEADER" | _base64)"
       else
         response="$($WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$url" 2>"$HTTP_HEADER" | _base64)"
       fi
     else
-      if [ "$httpmethod"="POST" ] ; then
+      if [ "$httpmethod" = "POST" ] ; then
         response="$($WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$url" 2>"$HTTP_HEADER")"
       else
         response="$($WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$url" 2>"$HTTP_HEADER")"