Update frpc_full.ini (#3399)

Fix typos.

conf/frpc_full.ini

@@ -258,7 +258,7 @@ local_ip = 127.0.0.1
 local_port = 8000
 use_encryption = false
 use_compression = false
-subdomain = web01
+subdomain = web02
 custom_domains = web02.yourdomain.com
 # if not empty, frpc will use proxy protocol to transfer connection info to your local service
 # v1 or v2 or empty