installer: remove old yaml config files (#78)

Co-authored-by: Giorgi Lekveishvili <lekva@gl-mbp-m1-max.local>
diff --git a/core/installer/repoio.go b/core/installer/repoio.go
index d0ecd14..374f75f 100644
--- a/core/installer/repoio.go
+++ b/core/installer/repoio.go
@@ -297,7 +297,7 @@
 			return err
 		}
 	}
-	return r.CommitAndPush(fmt.Sprintf("install: %s", app.Name))
+	return r.CommitAndPush(fmt.Sprintf("install: %s", app.Name()))
 }
 
 func (r *repoIO) RemoveApp(appRootDir string) error {