Auto merge of #21997 - Manishearth:rollup, r=alexcrichton

None

src/doc/reference.md

@@ -1813,7 +1813,6 @@ default visibility with the `priv` keyword. When an item is declared as `pub`,
 it can be thought of as being accessible to the outside world. For example:
 
 ```
-# #![allow(missing_copy_implementations)]
 # fn main() {}
 // Declare a private struct
 struct Foo;

src/doc/trpl/ownership.md

@@ -523,7 +523,7 @@ fn print<'a>(s: &'a str); // expanded
 fn debug(lvl: u32, s: &str); // elided
 fn debug<'a>(lvl: u32, s: &'a str); // expanded
 
-// In the preceeding example, `lvl` doesn't need a lifetime because it's not a
+// In the preceding example, `lvl` doesn't need a lifetime because it's not a
 // reference (`&`). Only things relating to references (such as a `struct`
 // which contains a reference) need lifetimes.