[clang-tools-extra] [clangd] Fix is spelled in source bug (PR #76668)

[Nathan Ridge via cfe-commits]

HighCommander4 wrote:

> (A drive-by comment: I stumbled on the commit message of this PR and found it surprising that I'm the co-author of it! I'm not entirely clear on GitHub's schemas, but IMO shouldn't the co-author be the one who clicks the "merge" button?)

The reason is that one of the four commits that were squashed had you as a co-author:

![image](https://github.com/llvm/llvm-project/assets/1751085/1d228d15-0c16-4e54-bb86-84bfdeed342e)

(I'm not sure how that happened in the first place.)

https://github.com/llvm/llvm-project/pull/76668