fix bug

install.sh

@@ -117,7 +117,7 @@ installGo(){
     if [[ -z $INSTALL_VERSION ]];then
         echo "正在获取最新版golang..."
         if [[ $CAN_GOOGLE == 0 ]];then
-            INSTALL_VERSION=`curl -s https://gomirrors.org/|grep -w downloadBox|grep src|grep -oP '[\d.]+'|head -n 1`
+            INSTALL_VERSION=`curl -s https://gomirrors.org/|grep -w downloadBox|grep src|grep -oP '\d+\.\d+\.?\d*'|head -n 1`
         else
             INSTALL_VERSION=`curl -s https://github.com/golang/go/releases|grep releases/tag|sed '/beta/d'|sed '/rc/d'|grep -o "[0-9].*[0-9]"|head -n 1`
         fi