fix typo

RalfJung · oli-obk · web-flow · commit a0cc3854eb85 · 2022-10-20T15:57:21.000+02:00
Co-authored-by: Oli Scherer &lt;github35764891676564198441@oli-obk.de&gt;
diff --git a/compiler/rustc_error_codes/src/error_codes/E0791.md b/compiler/rustc_error_codes/src/error_codes/E0791.md
@@ -1,4 +1,4 @@
-An unaligned references to a field of a [packed] struct got created.
+An unaligned reference to a field of a [packed] struct got created.
 
 Erroneous code example:
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-An unaligned references to a field of a [packed] struct got created.`
	`1`	`+An unaligned reference to a field of a [packed] struct got created.`
`2`	`2`
`3`	`3`	`Erroneous code example:`
`4`	`4`