Update TOC.yml

Author: iamwilliew

articles/virtual-machines/TOC.yml

@@ -278,7 +278,7 @@
       - name: Msv2 and Mdsv2 Medium Memory series
         href: msv2-mdsv2-series.md
       - name: Msv2 and Mdsv2 migration guide
-        href: msv2-mdsv2--isolated-retirement.md
+        href: msv2-mdsv2-isolated-retirement.md
       - name: Mv2-series
         href: mv2-series.md
       - name: Msv3 and Mdsv3 Medium Memory Series