Linux,Windows: title GOOS pages consistently

Most GOOS wiki pages use a title of the form "Go on GOOS". Update the
outliers to match this format.

Change-Id: I6a6a636c89f23468f63ff0bb2dd6eb6b1d68901d
Reviewed-on: https://go-review.googlesource.com/c/wiki/+/749005
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Sean Liao <sean@liao.dev>

Linux.md

diff --git a/Linux.md b/Linux.md
index eb6b47c..9e65666 100644
--- a/Linux.md
+++ b/Linux.md
@@ -1,9 +1,7 @@
 ---
-title: Linux
+title: Go on Linux
 ---
 
-## Go on Linux
-
 | **Kernel version** | **Architectures**     | **Initial support version** | **Final support version** |
 | :----------------- | :-------------------- | :-------------------------- | :------------------------ |
 | TBD                | mips, mipsle          | Go 1.8                      |                           |

Windows.md

diff --git a/Windows.md b/Windows.md
index 57372ce..b73efca 100644
--- a/Windows.md
+++ b/Windows.md
@@ -1,5 +1,5 @@
 ---
-title: Go for Microsoft Windows
+title: Go on Microsoft Windows
 ---
 
 > The Go project's official download page is at [https://go.dev/dl](https://go.dev/dl/).