Merge pull request #1225 from Turbo87/fix-commas

posts/Rust-1.47: Add missing whitespace in function list

Author: Manishearth

posts/2020-10-08-Rust-1.47.md

@@ -191,7 +191,7 @@ Additionally, nine new APIs were stabilized this release:
 The following previously stable APIs have now been made `const`:
 
 - [The `new` method for all `NonZero` integers.][73858]
-- [The `checked_add`,`checked_sub`,`checked_mul`,`checked_neg`, `checked_shl`,
+- [The `checked_add`, `checked_sub`, `checked_mul`, `checked_neg`, `checked_shl`,
   `checked_shr`, `saturating_add`, `saturating_sub`, and `saturating_mul`
   methods for all integers.][73858]
 - [The `checked_abs`, `saturating_abs`, `saturating_neg`, and `signum`  for all