fix: redis config dir

debbuild/22.04/DEBIAN/postinst

@@ -51,7 +51,7 @@ done
 if [ ! -e "${RedisConfDir}/redis.conf" ]; then    
     cp ${RedisConfDir}/default/redis.conf ${RedisConfDir}; 
 else
-    sed -i 's/replica-read-only yes/replica-read-only no/g' $(RedisConfDir)/redis.conf 
+    sed -i 's/replica-read-only yes/replica-read-only no/g' ${RedisConfDir}/redis.conf 
 fi
 if [ ! -e "${FERootDir}/config.js" ]; then    
     cp ${FERootDir}/default/config.js ${FERootDir};