modify 2 approvals to 1 (#1196)

scripts/checkapproval.sh

@@ -6,12 +6,12 @@ for API_FILE in ${API_FILES[*]}; do
   if [ "${API_CHANGE}" ];then
     approval_line=`curl -H "Authorization: token ${GITHUB_API_TOKEN}" https://api.github.com/repos/PaddlePaddle/FluidDoc/pulls/${GIT_PR_ID}/reviews?per_page=10000`
     if [ "${API_FILE}" == "doc/fluid" ];then
-      APPROVALS=`echo ${approval_line}|python ./scripts/check_pr_approval.py 2 7534971 14105589 12605721 3064195 328693 47554610 39645414 11195205 20274488 45024560 ` 
+      APPROVALS=`echo ${approval_line}|python ./scripts/check_pr_approval.py 1 7534971 14105589 12605721 3064195 328693 47554610 39645414 11195205 20274488 45024560 ` 
     fi
   fi
   if [ "${APPROVALS}" == "FALSE" ]; then
     if [ "${API_FILE}" == "doc/fluid" ];then
-      echo "You must have two RD (wanghaoshuang or guoshengCS or heavengate or kuke or Superjomn or lanxianghit or cyj1986 or hutuxian or frankwhzhang or nepeplwu) approval for the api change! ${API_FILE} for the management reason of API interface and API document."
+      echo "You must have one RD (wanghaoshuang or guoshengCS or heavengate or kuke or Superjomn or lanxianghit or cyj1986 or hutuxian or frankwhzhang or nepeplwu) approval for the api change! ${API_FILE} for the management reason of API interface and API document."
     fi
     exit 1
   fi