Rollup merge of rust-lang#153319 - DanielEScherzer:ie-dots, r=jhpratt

Comments and docs: add missing periods to "ie."

"i.e." is short for the Latin "id est" and thus both letters should be followed by periods.

Author: JonathanBrouwer

clippy_lints/src/trait_bounds.rs

@@ -110,7 +110,7 @@ impl<'tcx> LateLintPass<'tcx> for TraitBounds {
 
     fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) {
         // special handling for self trait bounds as these are not considered generics
-        // ie. trait Foo: Display {}
+        // i.e. trait Foo: Display {}
         if let Item {
             kind: ItemKind::Trait(_, _, _, _, _, bounds, ..),
             ..