Update README

Removed WSL2 Kernel GitHub Issues, redirected to WSL main GitHub page issues.

Signed-off-by: Tyler Hicks <tyhicks@linux.microsoft.com>
Signed-off-by: Kelsey Steele <kelseysteele@microsoft.com>

Author: jiayali-ms

README

@@ -16,3 +16,10 @@ several of them using the reStructuredText markup notation.
 Please read the Documentation/process/changes.rst file, as it contains the
 requirements for building and running the kernel, and information about
 the problems which may result by upgrading your kernel.
+
+============
+
+If you would like to report an issue on the WSL2 Linux Kernel, please do so 
+at the WSL GitHub:
+
+    https://github.com/microsoft/WSL