Break words in API docs, when the words are too long

Author: pradyunsg

src/furo/assets/styles/content/_api.sass

@@ -67,6 +67,10 @@ dl[class]:not(.option-list):not(.field-list):not(.footnote):not(.glossary):not(.
       font-weight: normal
       width: 3.5rem
 
+  // Break words when they're too long
+  span.pre
+    word-break: break-word
+
 em.property
   font-style: normal
   &:first-child