Fix Dead links in mintlify docs

docs/getting-started/introduction.mdx

@@ -23,21 +23,21 @@ Get started below!
   <Card
     title="Quickstart"
     icon="bolt"
-    href="/quickstart"
+    href="/getting-started/quickstart"
   >
     Quickly set up a local environment to interface with the Honcho API
   </Card>
   <Card
     title="Architecture"
     icon="building"
-    href="/architecture"
+    href="/getting-started/architecture"
   >
     Get an overview of the different primitives and structure of Honcho
   </Card>
   <Card
     title="Honcho Primer"
     icon="scroll"
-    href="/guides/langchain"
+    href="https://blog.plasticlabs.ai/blog/A-Simple-Honcho-Primer"
   >
     Read our blog post that introduces Honcho, the motivations behind it, and what it will enable.
   </Card>