[release] README.md: fix broken gopls link

The link to gopls on line 101 is broken.
It currently uses a manual link to the gopls
website, and can instead use the already-
defined link at the bottom of the page.

Change-Id: Ib090271e53821ca6d8088570b1a18c97999bf59b
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/236779
Reviewed-by: Hyang-Ah Hana Kim <[email protected]>
(cherry picked from commit eeab643)
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/236957

Author: tedsilb

README.md

@@ -98,7 +98,7 @@ The Go extension uses a suite of [command-line tools](docs/tools.md) to provide
 
 The Go team at Google has developed [`gopls`](docs/gopls.md), which is the official Go language server. It is currently in an alpha state and under active development.
 
-[`gopls`](golang.org/s/gopls) is recommended for projects that use Go modules, as it provides much better support.
+[`gopls`] is recommended for projects that use Go modules, as it provides much better support.
 
 To opt-in to the language server, set [`"go.useLanguageServer"`](docs/commands.md#useLanguageServer) to `true` in your settings. You should then be prompted to install [`gopls`]. If you are not prompted, you can install `gopls` manually by running the `Go: Install/Update Tools` command and selecting `gopls`.