Update TOC.yml

Author: iamwilliew

articles/virtual-machines/TOC.yml

@@ -192,7 +192,7 @@
       - name: B-series burstable
         items:
         - name: B-series CPU Credit Model
-          href: ./b-series-cpu-credit-model/b-series-cpu-creditmodel.md
+          href: ./b-series-cpu-credit-model/b-series-cpu-credit-model.md
         - name: B-series V1
           href: sizes-b-series-burstable.md
         - name: Bsv2-series