fix: also handle bare relative paths in markdown links

Extends the normalization to handle paths like "guides/foo.md" (without ./)
that should be treated as sibling directories. This ensures compatibility
with various markdown link styles used in documentation.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: KyleAMathews

.claude/settings.local.json

@@ -0,0 +1,15 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(sed:*)",
+      "Bash(npx prettier:*)",
+      "WebFetch(domain:github.com)",
+      "Read(//Users/kylemathews/programs/tanstack-db/docs/**)",
+      "WebFetch(domain:deploy-preview-477--tanstack.netlify.app)"
+    ],
+    "deny": [],
+    "additionalDirectories": [
+      "/Users/kylemathews/programs/tanstack-db/docs/guides"
+    ]
+  }
+}

src/components/MarkdownLink.tsx

@@ -23,6 +23,10 @@ export function MarkdownLink({
   if (to?.startsWith('./')) {
     // Convert ./path to ../path to account for the fact that we're at /docs/file not /docs/file/
     to = '../' + to.slice(2)
+  } else if (to && !to.startsWith('/') && !to.startsWith('../') && to.includes('/')) {
+    // Handle bare relative paths like "guides/foo" that should be treated as "../guides/foo"
+    // This handles cases where markdown has "subfolder/file.md" instead of "./subfolder/file.md"
+    to = '../' + to
   }
 
   return (