Rollup merge of rust-lang#67940 - JohnTitor:rustc-guide, r=JohnTitor

tmandry · web-flow · commit ce3bfeb4f0f8 · 2020-01-17T11:40:26.000-08:00
Update rustc-guide r? @ghost CC: @rust-lang/wg-learning
diff --git a/src/doc/rustc-guide b/src/doc/rustc-guide
@@ -1 +1 @@
-Subproject commit b5c6babcdd4ce1fa90458b7827a5fde082e79e87
+Subproject commit 92baf7293dd2d418d2ac4b141b0faa822075d9f7
