Rollup merge of #104505 - WaffleLapkin:no-double-spaces-in-comments, r=jackh726

Remove double spaces after dots in comments

Most of the comments do not have double spaces, so I assume these are typos.

compiler/rustc_trait_selection/src/traits/project.rs

@@ -148,7 +148,7 @@ impl<'tcx> ProjectionCandidateSet<'tcx> {
                 }
 
                 // Prefer where-clauses. As in select, if there are multiple
-                // candidates, we prefer where-clause candidates over impls.  This
+                // candidates, we prefer where-clause candidates over impls. This
                 // may seem a bit surprising, since impls are the source of
                 // "truth" in some sense, but in fact some of the impls that SEEM
                 // applicable are not, because of nested obligations. Where
@@ -1034,7 +1034,7 @@ fn opt_normalize_projection_type<'a, 'b, 'tcx>(
         }
         Err(ProjectionCacheEntry::InProgress) => {
             // Under lazy normalization, this can arise when
-            // bootstrapping.  That is, imagine an environment with a
+            // bootstrapping. That is, imagine an environment with a
             // where-clause like `A::B == u32`. Now, if we are asked
             // to normalize `A::B`, we will want to check the
             // where-clauses in scope. So we will try to unify `A::B`