Update standard/patterns.md

Nigel-Ecma · jskeet · jskeet · commit 5eb3b0b7af88 · 2023-10-04T21:09:24.000+01:00
Co-authored-by: Jon Skeet &lt;skeet@pobox.com&gt;
diff --git a/standard/patterns.md b/standard/patterns.md
@@ -156,7 +156,7 @@ A set of patterns `Q` *subsumes* a pattern `P` if any of the following condition
 
 ## 11.4 Pattern exhaustiveness
 
-Informally, a set of patterns is exhaustive for a type if for every possible value of that type other than null some pattern in the set is applicable.
+Informally, a set of patterns is exhaustive for a type if, for every possible value of that type other than null, some pattern in the set is applicable.
 The following rules define when a set of patterns is *exhaustive* for a type:
 
 A set of patterns `Q` is *exhaustive* for a type `T` if any of the following conditions hold:
