update codecov docs

Author: tsirysndr

docs/examples/coverage/codecov.md

@@ -27,7 +27,7 @@ fluentci run codecov_pipeline upload
 You can also use this pipeline programmatically:
 
 ```typescript
-import { upload } from "https://deno.land/x/codecov_pipeline/mod.ts";
+import { upload } from "jsr:@fluentci/codecov";
 
 await upload();
 ```