Fix typo in NEON/PacketMath.h

Eigen/src/Core/arch/NEON/PacketMath.h

diff --git a/Eigen/src/Core/arch/NEON/PacketMath.h b/Eigen/src/Core/arch/NEON/PacketMath.h
index dbfb1cd..b927a16 100644
--- a/Eigen/src/Core/arch/NEON/PacketMath.h
+++ b/Eigen/src/Core/arch/NEON/PacketMath.h
@@ -3766,7 +3766,7 @@
 }
 
 #else 
-template<> EIGEN_STRONG_INLINE Packet2d psqrt(const Packet2d& _x){ return vsqrt_f64(_x); }
+template<> EIGEN_STRONG_INLINE Packet2d psqrt(const Packet2d& _x){ return vsqrtq_f64(_x); }
 #endif
 
 #endif // EIGEN_ARCH_ARM64