Auto merge of #20283 - gootorov:patch-1, r=jdm

style: Fix a typo in Integer struct docs

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Fix a typo in `Integer` struct documentation.

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components/style/values/specified/mod.rs

@@ -377,7 +377,7 @@ impl ToComputedValue for Opacity {
     }
 }
 
-/// An specified `<integer>`, optionally coming from a `calc()` expression.
+/// A specified `<integer>`, optionally coming from a `calc()` expression.
 ///
 /// <https://drafts.csswg.org/css-values/#integers>
 #[derive(Clone, Copy, Debug, Eq, MallocSizeOf, PartialEq, PartialOrd)]