Fix rfc url correctly

Author: mattsoulanille

rfcs/20211109-tflite-support-for-node.md

@@ -2,7 +2,7 @@
 
 | Status        | Proposed       |
 :-------------- |:---------------------------------------------------- |
-| **RFC #**     | [5](https://github.com/sig-tfjs/pull/5)|
+| **RFC #**     | [5](https://github.com/tensorflow/sig-tfjs/pull/5)|
 | **Author(s)** | Matthew Soulanille ([email protected]), Jason Mayes ([email protected]) |
 | **Sponsor**   | Ping Yu ([email protected])                 |
 | **Updated**   | 2022-02-17                                          |