[llvm] [AArch64] Fix a presumed typo in isFPImmLegal limit. NFC (PR #106716)

[David Green via llvm-commits]

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@@ -11463,7 +11463,9 @@ bool AArch64TargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT,
     // movw+movk is fused). So we limit up to 2 instrdduction at most.
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davemgreen wrote:

Do you mind changing instrdduction to instructions whilst you are here?

https://github.com/llvm/llvm-project/pull/106716