Add message in help for rustdoc book link

AndyGauge · AndyGauge · commit 09c4204e89bc · 2020-08-21T17:19:56.000-07:00
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
@@ -408,6 +408,7 @@ fn usage(argv0: &str) {
         (option.apply)(&mut options);
     }
     println!("{}", options.usage(&format!("{} [options] <input>", argv0)));
+    println!("More information available at https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html")
 }
 
 /// A result type used by several functions under `main()`.

Original file line number	Diff line number	Diff line change
`@@ -408,6 +408,7 @@ fn usage(argv0: &str) {`
`408`	`408`	`(option.apply)(&mut options);`
`409`	`409`	`}`
`410`	`410`	`println!("{}", options.usage(&format!("{} [options] <input>", argv0)));`
	`411`	`+ println!("More information available at https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html")`
`411`	`412`	`}`
`412`	`413`
`413`	`414`	/// A result type used by several functions under `main()`.