Fixing a typo; NFC.

llvm-svn: 357579
diff --git a/clang/docs/LibASTMatchersReference.html b/clang/docs/LibASTMatchersReference.html
index 10b9ebf..3f8e417 100644
--- a/clang/docs/LibASTMatchersReference.html
+++ b/clang/docs/LibASTMatchersReference.html
@@ -2773,7 +2773,7 @@
 Given
   __attribute__((device)) void f() { ... }
 decl(hasAttr(clang::attr::CUDADevice)) matches the function declaration of
-f. If the matcher is use from clang-query, attr::Kind parameter should be
+f. If the matcher is used from clang-query, attr::Kind parameter should be
 passed as a quoted string. e.g., hasAttr("attr::CUDADevice").
 </pre></td></tr>