Update README.md

README.md

@@ -78,7 +78,7 @@ Wechat：fengzhizi715
 
 > Java与Android技术栈：每周更新推送原创技术文章，欢迎扫描下方的公众号二维码并关注，期待与您的共同成长和进步。
 
-![](https://user-gold-cdn.xitu.io/2018/7/24/164cc729c7c69ac1?w=344&h=344&f=jpeg&s=9082)
+![](https://github.com/fengzhizi715/NetDiscovery/blob/master/images/gzh.jpeg)
 
 License
 -------
@@ -95,4 +95,4 @@ License
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
-    limitations under the License.
+    limitations under the License.