[CI] Fix accuracy retrieval regexp (#290)

Author: aobolensk

.github/workflows/ci.yml

@@ -505,8 +505,8 @@ jobs:
 
     - name: Update README for model
       run: |
-        TOP1_ACC=$(grep -oE 'Top-1 Accuracy: [0-9]+\.?[0-9]*%' accuracy_${{ matrix.model }}.txt | grep -oE '[0-9]+\.?[0-9]*' | head -n1)
-        TOP5_ACC=$(grep -oE 'Top-5 Accuracy: [0-9]+\.?[0-9]*%' accuracy_${{ matrix.model }}.txt | grep -oE '[0-9]+\.?[0-9]*' | head -n1)
+        TOP1_ACC=$(sed -nE 's/^Top-1 Accuracy: ([0-9]+(\.[0-9]+)?)%$/\1/p' accuracy_${{ matrix.model }}.txt | head -n1)
+        TOP5_ACC=$(sed -nE 's/^Top-5 Accuracy: ([0-9]+(\.[0-9]+)?)%$/\1/p' accuracy_${{ matrix.model }}.txt | head -n1)
         DATE=$(date '+%Y-%m-%d')
     
         if [ -z "$TOP1_ACC" ] || [ -z "$TOP5_ACC" ]; then