update user/repos api description (#16503)

Currently states 

> List the repos that the authenticated user owns or has access to

but the endpoint does not list all repos a user has access to, only the ones a user owns

(Also verified and discussed in Discord)

Fixes #16502

routers/api/v1/user/repo.go

@@ -85,7 +85,7 @@ func ListUserRepos(ctx *context.APIContext) {
 func ListMyRepos(ctx *context.APIContext) {
 	// swagger:operation GET /user/repos user userCurrentListRepos
 	// ---
-	// summary: List the repos that the authenticated user owns or has access to
+	// summary: List the repos that the authenticated user owns
 	// produces:
 	// - application/json
 	// parameters: