UserspaceEmulator: Fix typos in SoftFPU.[cpp|h]

Author: https://github.com/Hendiadyoin1
Commit: f2eff767a0
Pull-request: https://github.com/SerenityOS/serenity/pull/8946
Reviewed-by: https://github.com/Dexesttp
Reviewed-by: https://github.com/awesomekling
Reviewed-by: https://github.com/kleinesfilmroellchen ✅

Userland/DevTools/UserspaceEmulator/SoftFPU.cpp

@@ -186,7 +186,7 @@ ALWAYS_INLINE T SoftFPU::fpu_round(long double value) const
         return static_cast<T>(floorl(value));
     case RoundingMode::UP:
         return static_cast<T>(ceill(value));
-    case RoundingMode::TRUNK:
+    case RoundingMode::TRUNC:
         return static_cast<T>(truncl(value));
     default:
         VERIFY_NOT_REACHED();