blog: update to latest x/tools

This update brings in Markdown fixes and redirect support.

Change-Id: I1d4c2589992ca832e27b0ae53a1598240d780d69
Reviewed-on: https://go-review.googlesource.com/c/blog/+/223597
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>

go.mod

diff --git a/go.mod b/go.mod
index 1835f3c..e12eeef 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@
 	github.com/gorilla/context v1.1.1
 	golang.org/x/net v0.0.0-20200226121028-0de0cce0169b
 	golang.org/x/text v0.3.2
-	golang.org/x/tools v0.0.0-20200313205530-4303120df7d8
+	golang.org/x/tools v0.0.0-20200317205521-2944c61d58b4
 	golang.org/x/website v0.0.0-20190903192346-00e97558e113
 	gopkg.in/tomb.v2 v2.0.0-20161208151619-d5d1b5820637
 )

go.sum

diff --git a/go.sum b/go.sum
index d6c37d4..bd3ce9e 100644
--- a/go.sum
+++ b/go.sum
@@ -74,8 +74,8 @@
 golang.org/x/tools v0.0.0-20190516015132-d1a3278ee749 h1:L1RW4r06KGFktOvNizsWNBWHn4V2I/p9SNRLhNn6hzM=
 golang.org/x/tools v0.0.0-20190516015132-d1a3278ee749/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20200313205530-4303120df7d8 h1:gkI/wGGwpcG5W4hLCzZNGxA4wzWBGGDStRI1MrjDl2Q=
-golang.org/x/tools v0.0.0-20200313205530-4303120df7d8/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
+golang.org/x/tools v0.0.0-20200317205521-2944c61d58b4 h1:ZDNUPyBE3vtF6Sm7/3g98znzRSeFeCuIuAFxYQLm21o=
+golang.org/x/tools v0.0.0-20200317205521-2944c61d58b4/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
 golang.org/x/website v0.0.0-20190903192346-00e97558e113 h1:uwiB8M+mk9E2X0p+Pr1KlfnA1eWSheaeYkVmsesWLKg=
 golang.org/x/website v0.0.0-20190903192346-00e97558e113/go.mod h1:xGSACM0vBhAtMi/g1gCnV3jnZ7fON45PUeLicIqMMQo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=