Update chirpstack-hugo-theme submodule.

brocaar · brocaar · commit 38e12d39b9e1 · 2019-11-27T11:56:25.000+01:00
This endpoint can be used without GitHub account / SSH setup.
diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "docs/themes/chirpstack-hugo-theme"]
 	path = docs/themes/chirpstack-hugo-theme
-	url = git@github.com:brocaar/chirpstack-hugo-theme.git
+	url = https://github.com/brocaar/chirpstack-hugo-theme.git
