Change test repo description to be language specific

While debugging tests, it was unclear which test was creating which
repo. Changing the descriptions makes it easier to figure out which test
to look at.

examples/repo/python/__main__.py

@@ -2,7 +2,7 @@
 import pulumi_github as github
 
 repo = github.Repository("demo-repo",
-    description="Generated from automated test",
+    description="Generated from automated Python test",
     visibility="private"
 )
 

examples/repo/ts/index.ts

@@ -1,7 +1,7 @@
 import * as github from "@pulumi/github";
 
 const repo = new github.Repository("demo-repo", {
-    description: "Generated from automated test",
+    description: "Generated from automated Typescript test",
     visibility: "private",
 });