[llvm] Fix various cl::desc typos and whitespace issues. (PR #121955)

[Florian Mayer via llvm-commits]

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@@ -251,7 +251,7 @@ static cl::opt<bool>
                             cl::init(true));
 
 static cl::opt<bool> UseContextForNoWrapFlagInference(
-    "scalar-evolution-use-context-for-no-wrap-flag-strenghening", cl::Hidden,
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fmayer wrote:

This isn't described in the CL title

I don't have strong opinions on whether we should "fix" an existing flag or not, but the 1st line of the commit should clearly indicate, so if there are any problems, this CL is a more obvious culprit

FWIW if I did this, I would split it off the rest of the CL (and make this [NFC])

https://github.com/llvm/llvm-project/pull/121955