[website] add infer-debug man page

Summary:
We forgot to add this when adding the new subcommand.  These should
really be auto-generated but let's save that for another diff.

Reviewed By: martintrojer

Differential Revision: D24217111

fbshipit-source-id: 860860533

website/docs/man-infer-debug.md

@@ -0,0 +1,8 @@
+---
+id: man-infer-debug
+title: infer debug
+---
+
+import HtmlWrap from "@site/src/components/HtmlWrap";
+
+<HtmlWrap url="/man/next/infer-debug.1.html" />

website/sidebars.js

@@ -20,6 +20,7 @@ module.exports = {
           "man-infer-analyze",
           "man-infer-capture",
           "man-infer-compile",
+          "man-infer-debug",
           "man-infer-explore",
           "man-infer-help",
           "man-infer-report",