Rollup merge of rust-lang#66161 - mark-i-m:fix-rustc-guide, r=ehuss

Centril · web-flow · commit e30dfed0e7ab · 2019-11-08T14:16:41.000+01:00
Update rustc-guide r? @ehuss fix rust-lang#66144
diff --git a/src/doc/rustc-guide b/src/doc/rustc-guide
@@ -1 +1 @@
-Subproject commit 941968db2fd9c85788a4f971c8e425d46b4cb734
+Subproject commit ab4978cb3b20b7f48d3c18a941f158ba142e9668
