all: change learn.go.dev to go.dev/learn

go.dev/learn is the new canonical URL for learn.go.dev. learn.go.dev
does not work at the moment.

Change-Id: I91413fe7ab31142985925104494215efc32b9f56
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/346109
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Julie Qiu <julie@golang.org>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
diff --git a/README.md b/README.md
index f77ecae..72167e1 100644
--- a/README.md
+++ b/README.md
@@ -132,7 +132,7 @@
 [starting a GitHub discussion](https://github.com/golang/vscode-go/discussions),
 or by asking a question on [Stack Overflow].
 
-Also, you can take a look at [learn.go.dev](https://learn.go.dev) and
+Also, you can take a look at [go.dev/learn](https://go.dev/learn) and
 [golang.org/help](https://golang.org/help) for more general guidance on using
 Go.
 
diff --git a/src/welcome.ts b/src/welcome.ts
index 4f67115..e669941 100644
--- a/src/welcome.ts
+++ b/src/welcome.ts
@@ -181,7 +181,7 @@
 					<div class="Card-inner">
 						<p class="Card-title">Learning Go</p>
 						<p class="Card-content">If you're new to the Go programming language,
-							<a href="https://learn.go.dev">learn.go.dev</a> is a great place to get started.</a>
+							<a href="https://go.dev/learn">go.dev/learn</a> is a great place to get started.</a>
 						</p>
 					</div>
 				</div>