Rollup merge of rust-lang#63334 - mark-i-m:fix-guide, r=ehuss

Centril · web-flow · commit 35380be5e2fe · 2019-08-07T09:47:04.000+02:00
Update to rustc-guide that passes toolstate r? @ehuss Sorry for the trouble. I've been somewhat hard to reach lately. Thanks for your help!
diff --git a/src/doc/rustc-guide b/src/doc/rustc-guide
@@ -1 +1 @@
-Subproject commit b5a2b9353c661000378415ecfeb757eb7df42d66
+Subproject commit 6f4ba673ff9d4613e98415bc095347a6a0031e9c
