_content: fix broken Markdown links to /doc/toolchain

Change-Id: I2256da09dcbc20832c5f6c3eb48a884af8ad604a
GitHub-Last-Rev: fa7f86b3b409e8d27bf93aacb219ccbaadec9a78
GitHub-Pull-Request: golang/website#228
Reviewed-on: https://go-review.googlesource.com/c/website/+/503235
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
diff --git a/_content/doc/modules/gomod-ref.md b/_content/doc/modules/gomod-ref.md
index 6b64efd..0fb082c 100644
--- a/_content/doc/modules/gomod-ref.md
+++ b/_content/doc/modules/gomod-ref.md
@@ -163,7 +163,7 @@
 Go toolchains refuse to use modules declaring newer Go versions.
 
 The `go` directive is an input into selecting which Go toolchain to run.
-See “[/doc/toolchain](Go toolchains)” for details.
+See “[Go toolchains](/doc/toolchain)” for details.
 
 The `go` directive affects use of new language features:
 
@@ -221,7 +221,7 @@
 Only takes effect when the module is the main module
 and the default toolchain is older than the suggested toolchain.
 
-For more see “[/doc/toolchain](Go toolchains)” and
+For more see “[Go toolchains](/doc/toolchain)” and
 [`toolchain` directive](/ref/mod/#go-mod-file-toolchain) in the
 Go Modules Reference.
 
@@ -246,7 +246,7 @@
 
 ### Notes {#toolchain-notes}
 
-See “[/doc/toolchain](Go toolchains)” for details about how the `toolchain` line
+See “[Go toolchains](/doc/toolchain)” for details about how the `toolchain` line
 affects Go toolchain selection.
 
 ## require {#require}
diff --git a/_content/ref/mod.md b/_content/ref/mod.md
index b32ffe1..0b1d3e4 100644
--- a/_content/ref/mod.md
+++ b/_content/ref/mod.md
@@ -542,7 +542,7 @@
 Go toolchains refuse to use modules declaring newer Go versions.
 
 The `go` directive is an input into selecting which Go toolchain to run.
-See “[/doc/toolchain](Go toolchains)” for details.
+See “[Go toolchains](/doc/toolchain)” for details.
 
 The `go` directive affects use of new language features:
 
@@ -619,7 +619,7 @@
 For reproducibility, the `go` command writes its own toolchain name in a `toolchain` line any time
 it is updating the `go` version in the `go.mod` file (usually during `go get`).
 
-For details, see “[/doc/toolchain](Go toolchains)”.
+For details, see “[Go toolchains](/doc/toolchain)”.
 
 ```
 ToolchainDirective = "toolchain" ToolchainName newline .
@@ -1238,7 +1238,7 @@
 It only has an effect when the default toolchain
 is older than the suggested toolchain.
 
-For details, see “[/doc/toolchain](Go toolchains)”.
+For details, see “[Go toolchains](/doc/toolchain)”.
 
 ```
 ToolchainDirective = "toolchain" ToolchainName newline .