appview/docs/nix/spindle/readme.md: fix outdated documentation links

appview/pages/templates/banner.html

···
     <div class="mx-6">
       These services may not be fully accessible until upgraded.
       <a class="underline text-red-800 dark:text-red-200"
-        href="https://tangled.org/@tangled.org/core/tree/master/docs/migrations.md">
+        href="https://docs.tangled.org/migrating-knots-spindles.html#migrating-knots-spindles">
         Click to read the upgrade guide</a>.
     </div>
   </details>

appview/pages/templates/knots/index.html

···
 {{ define "docsButton" }}
 <a
 class="btn flex items-center gap-2"
-href="https://tangled.org/@tangled.org/core/blob/master/docs/knot-hosting.md">
+href="https://docs.tangled.org/knot-self-hosting-guide.html#knot-self-hosting-guide">
 {{ i "book" "size-4" }}
 docs
 </a>

appview/pages/templates/layouts/fragments/footer.html

···
           <div class="flex flex-col gap-1">
             <div class="{{ $headerStyle }}">resources</div>
             <a href="https://blog.tangled.org" class="{{ $linkStyle }}" target="_blank" rel="noopener noreferrer">{{ i "book-open" $iconStyle }} blog</a>
-            <a href="https://tangled.org/@tangled.org/core/tree/master/docs" class="{{ $linkStyle }}">{{ i "book" $iconStyle }} docs</a>
+            <a href="https://docs.tangled.org" class="{{ $linkStyle }}">{{ i "book" $iconStyle }} docs</a>
             <a href="https://tangled.org/@tangled.org/core" class="{{ $linkStyle }}">{{ i "code" $iconStyle }} source</a>
             <a href="https://tangled.org/brand" class="{{ $linkStyle }}">{{ i "paintbrush" $iconStyle }} brand</a>
           </div>
···
           <div class="flex flex-col gap-1">
             <div class="{{ $headerStyle }}">resources</div>
             <a href="https://blog.tangled.org" class="{{ $linkStyle }}" target="_blank" rel="noopener noreferrer">{{ i "book-open" $iconStyle }} blog</a>
-            <a href="https://tangled.org/@tangled.org/core/tree/master/docs" class="{{ $linkStyle }}">{{ i "book" $iconStyle }} docs</a>
+            <a href="https://docs.tangled.org" class="{{ $linkStyle }}">{{ i "book" $iconStyle }} docs</a>
             <a href="https://tangled.org/@tangled.org/core" class="{{ $linkStyle }}">{{ i "code" $iconStyle }} source</a>
             <a href="https://tangled.org/brand" class="{{ $linkStyle }}">{{ i "paintbrush" $iconStyle }} brand</a>
           </div>

appview/pages/templates/repo/pipelines/pipelines.html

···
       </p>
       <p>
         <span class="{{ $bullet }}">2</span>Configure your CI/CD
-        <a href="https://tangled.org/@tangled.org/core/blob/master/docs/spindle/pipeline.md" class="underline">pipeline</a>.
+        <a href="https://docs.tangled.org/spindles.html#pipelines" class="underline">pipeline</a>.
       </p>
       <p><span class="{{ $bullet }}">3</span>Trigger a workflow with a push or a pull-request!</p>
     </div>

appview/pages/templates/repo/settings/pipelines.html

···
       <p class="text-gray-500 dark:text-gray-400">
         Choose a spindle to execute your workflows on. Only repository owners
         can configure spindles. Spindles can be selfhosted,
-        <a class="text-gray-500 dark:text-gray-400 underline" href="https://tangled.org/@tangled.org/core/blob/master/docs/spindle/hosting.md">
+        <a class="text-gray-500 dark:text-gray-400 underline" href="https://docs.tangled.org/spindles.html#self-hosting-guide">
           click to learn more.
         </a>
       </p>

appview/pages/templates/spindles/index.html

···
 {{ define "docsButton" }}
 <a
 class="btn flex items-center gap-2"
-href="https://tangled.org/@tangled.org/core/blob/master/docs/spindle/hosting.md">
+href="https://docs.tangled.org/spindles.html#self-hosting-guide">
 {{ i "book" "size-4" }}
 docs
 </a>

docs/DOCS.md

···
 [Nixery](https://nixery.dev), which is handy for caching layers for frequently
 used packages.
 
-The pipeline manifest is [specified here](/docs/spindle/pipeline.md).
+The pipeline manifest is [specified here](https://docs.tangled.org/spindles.html#pipelines).
 
 ## Secrets with openbao
 

nix/vm.nix

···
     var = builtins.getEnv name;
   in
     if var == ""
-    then throw "\$${name} must be defined, see docs/hacking.md for more details"
+    then throw "\$${name} must be defined, see https://docs.tangled.org/hacking-on-tangled.html#hacking-on-tangled for more details"
     else var;
   envVarOr = name: default: let
     var = builtins.getEnv name;

readme.md

···
 
 ## docs
 
-* [knot hosting guide](/docs/knot-hosting.md)
-* [contributing guide](/docs/contributing.md) **please read before opening a PR!**
-* [hacking on tangled](/docs/hacking.md)
+- [knot hosting guide](https://docs.tangled.org/knot-self-hosting-guide.html#knot-self-hosting-guide)
+- [contributing guide](https://docs.tangled.org/contribution-guide.html#contribution-guide) **please read before opening a PR!**
+- [hacking on tangled](https://docs.tangled.org/hacking-on-tangled.html#hacking-on-tangled)
 
 ## security
 

spindle/motd

···
                       **
                         ********
 
-This is a spindle server. More info at https://tangled.sh/@tangled.sh/core/tree/master/docs/spindle
+This is a spindle server. More info at https://docs.tangled.org/spindles.html#spindles
 
 Most API routes are under /xrpc/