Update the chrome launch file for vscode debugging (#2479)

Weren't able to set breakpoints to specific lines of Vue code. The issue was fixed by removing the "./" part of the "webpack" key; inside "sourceMapPathOverrides".

Author: ashishiyer9

src/v2/cookbook/debugging-in-vscode.md

@@ -59,7 +59,7 @@ Click on the Debugging icon in the Activity Bar to bring up the Debug view, then
       "webRoot": "${workspaceFolder}/src",
       "breakOnLoad": true,
       "sourceMapPathOverrides": {
-        "webpack:///./src/*": "${webRoot}/*"
+        "webpack:///src/*": "${webRoot}/*"
       }
     },
     {