docs: replace incorrect uses

Author: scastlara

README.md

@@ -32,6 +32,8 @@ This action can be used to perform automatic code-reviews or write reviewer guid
 
 ### Full Workflow Example
 
+This simple worklfow will perform a review whenever someone comments `/lgtm review` in a pull request.
+
 ```yaml
 name: LGTM Review
 
@@ -53,7 +55,7 @@ jobs:
           ref: refs/pull/${{ github.event.issue.number }}/merge
 
       - name: Run LGTM Review
-        uses: ./
+        uses: elementsinteractive/lgtm-ai@v1
         with:
           ai-api-key: ${{ secrets.AI_API_TOKEN }}
           git-api-key: ${{ secrets.GITHUB_TOKEN }}