childrens -> children in INFO output field names. This is a backward...

childrens -> children in INFO output field names. This is a backward incompatible change, but really a minimal one.

src/redis.c

@@ -1176,8 +1176,8 @@ sds genRedisInfoString(void) {
         "lru_clock:%ld\r\n"
         "used_cpu_sys:%.2f\r\n"
         "used_cpu_user:%.2f\r\n"
-        "used_cpu_sys_childrens:%.2f\r\n"
-        "used_cpu_user_childrens:%.2f\r\n"
+        "used_cpu_sys_children:%.2f\r\n"
+        "used_cpu_user_children:%.2f\r\n"
         "connected_clients:%d\r\n"
         "connected_slaves:%d\r\n"
         "client_longest_output_list:%lu\r\n"