Update latest doc link of SkyWalking Python (#189)

diff --git a/data/docs.yml b/data/docs.yml
index 3b3aacc..855bafb 100644
--- a/data/docs.yml
+++ b/data/docs.yml
@@ -45,8 +45,8 @@
       user: apache
       repo: skywalking-python
       docs:
-        - version: v0.4.0
-          link: https://github.com/apache/skywalking-python/tree/v0.4.0
+        - version: v0.5.0
+          link: https://github.com/apache/skywalking-python/tree/v0.5.0
 
     - name: NodeJS Agent
       icon: J