[clang] [AArch64] Simplify Clang's description of architecture extensions (PR #79311)

[Anatoly Trosinenko via cfe-commits]

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@@ -741,7 +722,7 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
 
     if (Feature == "+neon" || Feature == "+fp-armv8")
       FPU |= NeonMode;
-    if (Feature == "+jscvt") {
+    if (Feature == "+jsconv") {
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atrosinenko wrote:

Agree, added a test case to `aarch64-target-features.c`

https://github.com/llvm/llvm-project/pull/79311