[clangd] Fix typo. NFC

llvm-svn: 341452
diff --git a/clang-tools-extra/clangd/FindSymbols.cpp b/clang-tools-extra/clangd/FindSymbols.cpp
index cc7f084..b808e37 100644
--- a/clang-tools-extra/clangd/FindSymbols.cpp
+++ b/clang-tools-extra/clangd/FindSymbols.cpp
@@ -226,7 +226,7 @@
     // We should be only be looking at "local" decls in the main file.
     if (!SourceMgr.isWrittenInMainFile(NameLoc)) {
       // Even thought we are visiting only local (non-preamble) decls,
-      // we can get here when in the presense of "extern" decls.
+      // we can get here when in the presence of "extern" decls.
       return true;
     }
     const NamedDecl *ND = llvm::dyn_cast<NamedDecl>(ASTNode.OrigD);