demo: fix GH buttons

exampleSite/content/home/hero.md

@@ -12,7 +12,7 @@ cta_alt:
   url: https://discord.gg/z8wNYzb
 cta_note:
   label: >-
-    <a class="js-github-release" href="https://wowchemy.com/updates/" data-repo="gcushen/hugo-academic">Latest release<!-- V --></a><div style="text-shadow: none;"><a class="github-button" href="https://github.com/wowchemy/wowchemy-hugo-modules" data-icon="octicon-star" data-size="large" data-show-count="true" aria-label="Star Wowchemy site builder for Hugo">Star</a></div><div style="text-shadow: none;"><a class="github-button" href="https://github.com/wowchemy/starter-academic" data-icon="octicon-star" data-size="large" data-show-count="true" aria-label="Star the Academic template">Star</a></div>
+    <a class="js-github-release" href="https://wowchemy.com/updates/" data-repo="gcushen/hugo-academic">Latest release<!-- V --></a><div style="text-shadow: none;"><a class="github-button" href="https://github.com/wowchemy/wowchemy-hugo-modules" data-icon="octicon-star" data-size="large" data-show-count="true" aria-label="Star">Star Wowchemy site builder for Hugo</a></div><div style="text-shadow: none;"><a class="github-button" href="https://github.com/wowchemy/starter-academic" data-icon="octicon-star" data-size="large" data-show-count="true" aria-label="Star">Star the Academic template</a></div>
 design:
   background:
     gradient_end: '#1976d2'

netlify.toml

@@ -3,7 +3,7 @@
   publish = "public"
 
 [build.environment]
-  HUGO_VERSION = "0.79.1"
+  HUGO_VERSION = "0.80.0"
   HUGO_ENABLEGITINFO = "true"
 
 [context.production.environment]
@@ -14,13 +14,3 @@
 
 [context.branch-deploy]
   command = "hugo --gc --minify -b $DEPLOY_PRIME_URL"
-
-[[headers]]
-  for = "*.webmanifest"
-  [headers.values]
-    Content-Type = "application/manifest+json; charset=UTF-8"
-
-[[headers]]
-  for = "index.xml"
-  [headers.values]
-    Content-Type = "application/rss+xml"