fix: third lib make

proxy_c/third-lib/ReadME.txt

@@ -1,13 +1,13 @@
 libevent-c
 http://libevent.org
-libevent-2.1.8-stable.tar.gz
+libevent-2.1.11-stable.tar.gz
 mjson-1.7.0
 curl-7.52.1
 
 tar xvfz ../../backup/curl-7.52.1.tar.gz -C .
 mv curl-7.52.1 libcurl
-tar xvfz ../../backup/libevent-2.1.8-stable.tar.gz -C .
-mv libevent-2.1.8-stable libevent
-tar xvfz ../../backup/mjson-1.7.0 -C .
-mv mjson-1.7.0 libmjson
+tar xvfz ../../backup/libevent-2.1.11-stable.tar.gz -C .
+mv libevent-2.1.11-stable libevent
+tar xvfz ../../backup/mjson-1.7.0.tar.gz -C .
+mv json-1.7.0 libmjson