servo: Merge #20283 - style: Fix a typo in Integer struct docs (from gootorov:patch-1); r=jdm

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Fix a typo in `Integer` struct documentation.

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- [ ] These changes fix #__ (github issue number if applicable).
- [x] These changes do not require tests because: documentation

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Source-Repo: https://github.com/servo/servo
Source-Revision: ac71266987ff39483faebd58d4359eef956ae5cf

--HG--
extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear
extra : subtree_revision : f8b3c353ac9fe754a652fbbceee8de2d8b677cf7

servo/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)]