Rollup merge of rust-lang#77699 - GuillaumeGomez:word-wrap, r=XAMPPRocky

Add word wrap for short descriptions

Fixes rust-lang#77652

![Screenshot from 2020-10-08 13-26-18](https://user-images.githubusercontent.com/3050060/95452770-11845280-096a-11eb-80da-723da85261fa.png)

cc @WaffleLapkin
r? @jyn514

Author: JohnTitor

src/librustdoc/html/static/rustdoc.css

@@ -390,17 +390,13 @@ nav.sub {
 	cursor: pointer;
 }
 
+.docblock-short {
+	overflow-wrap: anywhere;
+}
 .docblock-short p {
 	display: inline;
 }
 
-.docblock-short.nowrap {
-	display: block;
-	overflow: hidden;
-	white-space: nowrap;
-	text-overflow: ellipsis;
-}
-
 .docblock-short p {
 	overflow: hidden;
 	text-overflow: ellipsis;