docs: rust: use the polite form

To be consistent with the other references we have.

Signed-off-by: Miguel Ojeda <[email protected]>

Author: ojeda

Documentation/rust/quick-start.rst

@@ -84,8 +84,8 @@ Otherwise, building LLVM takes quite a while, but it is not a complex process:
 
 	https://llvm.org/docs/GettingStarted.html#getting-the-source-code-and-building-llvm
 
-See Documentation/kbuild/llvm.rst for more information and further ways to
-fetch pre-built releases and distribution packages.
+Please see Documentation/kbuild/llvm.rst for more information and further ways
+to fetch pre-built releases and distribution packages.
 
 
 bindgen