change the destination of the stable results to have a different name

taking this step based on the comment here: actions/download-artifact#328 (comment)

Author: JacksonBurns

.github/workflows/CI.yml

@@ -210,9 +210,9 @@ jobs:
           path: |
             test/regression
 
-      - name: mkdir stable_regression_results
+      - name: mkdir reference_results
         if: ${{ env.REFERENCE_JOB == 'false' }}
-        run: mkdir stable_regression_results
+        run: mkdir reference_results
 
       # Retrieve Stable Results for reference
       - name : Find ID of Reference Results
@@ -232,14 +232,14 @@ jobs:
           repository: ReactionMechanismGenerator/RMG-Py
           github-token:  ${{ secrets.GH_PAT }}
           name: stable_regression_results
-          path: stable_regression_results
+          path: reference_results
 
       # Regression Testing - Actual Comparisons
       - name: Regression Tests - Compare to Baseline
         id: regression-comparison
         if: ${{ env.REFERENCE_JOB == 'false' }}
         env:
-          REFERENCE: stable_regression_results
+          REFERENCE: reference_results
         run: |
           exec 2> >(tee -a regression.stderr >&2) 1> >(tee -a regression.stdout)
           mkdir -p "test/regression-diff"