fix typo

Author: hugeping

.github/workflows/CI.yml

@@ -76,7 +76,7 @@ jobs:
 
       - name: Build windows binary
         run: |
-          make -f Makefile.mingw LUA_CFLAGS="" LUA_LFLAGS="" EXTRA_CFLAGS="-static -L./winlibs/ -I./winlibs/" EXTRA_LDFLAGS="-lluajit" LUA_LIBVERSION=`date +%y%m%d` install
+          make -f Makefile.mingw LUA_CFLAGS="" LUA_LFLAGS="" EXTRA_CFLAGS="-static -L./winlibs/ -I./winlibs/" EXTRA_LDFLAGS="-lluajit" VERSION=`date +%y%m%d` install
           make -f Makefile.mingw clean
 
       - name: Build linux binary