Fix variable interpolation in the real-time benchmark workflow

[skip ci]

Author: kocsismate

.github/workflows/real-time-benchmark.yml

@@ -248,7 +248,7 @@ jobs:
           sed -i 's/github_token = ""/github_token = "${{ secrets.GITHUB_TOKEN }}"/g' ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
 
           WORKFLOW_RUN_URL="${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
-          sed -i 's|log_url = ""|log_url = "$WORKFLOW_RUN_URL"|g' ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
+          sed -i "s|log_url = \"\"|log_url = \"$WORKFLOW_RUN_URL\"|g" ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
           sed -i 's|artifact_url = ""|artifact_url = "#ARTIFACT_URL#"|g' ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
 
           if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
@@ -259,7 +259,7 @@ jobs:
           CHANGESET_URL="${{ github.server_url }}/${{ github.repository }}/compare/$BASE_COMMIT..${{ env.COMMIT }}"
 
           sed -i 's|extra_title = ""|extra_title = "Changeset"|g' ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
-          sed -i 's|extra_text = ""|extra_text = "$CHANGESET_URL"|g' ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
+          sed -i "s|extra_text = \"\"|extra_text = \"$CHANGESET_URL\"|g" ./php-version-benchmarks/build/infrastructure/config/aws.tfvars
       - name: Run benchmark
         run: ./php-version-benchmarks/benchmark.sh run aws
       - name: Store results