Git_Basics: Fix Rebase link in Git_Basics
Git_Basics: Fix Rebase link in Git_Basics

Currently,a link in "Creating a Pull Request" section points
to dangling link in Git_Basics.rst.
This fix points document link to right location i.e., #rebasing
from same document.

Fixes https://github.com/coala/documentation/issues/124

Signed-off-by: Abhijeet Kasurde <6334fd0c217b1f2a15926284df229acde5b4fc3a@redhat.com>

akashfoss/documentation