Bump @antora/collector-extension from 1.0.0-alpha.3 to 1.0.1 in /docs (#361)

---
updated-dependencies:
- dependency-name: "@antora/collector-extension"
  dependency-version: 1.0.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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docs/package.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "antora": "3.2.0-alpha.8",
     "@antora/atlas-extension": "1.0.0-alpha.2",
-    "@antora/collector-extension": "1.0.0-alpha.3",
+    "@antora/collector-extension": "1.0.1",
     "@asciidoctor/tabs": "1.0.0-beta.6",
     "@springio/antora-extensions": "1.14.4",
     "@springio/asciidoctor-extensions": "1.0.0-alpha.10"