website: Enable header links on all pages

Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Change-Id: I474cbeb307f973871ce42f5e04e5aee4d2690ef1
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/26263
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/_config.yml b/_config.yml
index 4ddaaa5..d12d722 100755
--- a/_config.yml
+++ b/_config.yml
@@ -19,6 +19,7 @@
 kramdown:
   input: GFM
   toc_levels: "1,2"
+  auto_id: true
 
 collections:
   pages:
diff --git a/_config_dev.yml b/_config_dev.yml
index 23fd886..db9b224 100755
--- a/_config_dev.yml
+++ b/_config_dev.yml
@@ -20,6 +20,7 @@
 kramdown:
   input: GFM
   toc_levels: "1,2"
+  auto_id: true
 
 collections:
   documentation: