Update loader/full-example.yml project name

This fixes the failure caught by loader/loader_test.go in the CI run for
PR #362:

```
--- FAIL: TestFullExample (0.00s)
    loader_test.go:969: assertion failed: error is not nil: name Does not match pattern '^[a-z0-9][a-z0-9_-]*$'
```

Signed-off-by: Mike Bland <[email protected]>

Author: mbland

loader/full-example.yml

@@ -1,4 +1,4 @@
-name: Full_Example_project_name
+name: full_example_project_name
 services:
   foo: