NetworkPkg/DxeNetLib: Update misleading comment #491

Job	Run time
Analyze (ArmPkg, IA32,X64)	4m 5s
Analyze (CryptoPkg, IA32)	15m 26s
Analyze (CryptoPkg, X64)	16m 16s
Analyze (DynamicTablesPkg, IA32,X64)	10m 46s
Analyze (FatPkg, IA32,X64)	10m 37s
Analyze (FmpDevicePkg, IA32,X64)	13m 2s
Analyze (IntelFsp2Pkg, IA32,X64)	9m 53s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	10m 32s
Analyze (MdeModulePkg, IA32)	17m 0s
Analyze (MdeModulePkg, X64)	15m 26s
Analyze (MdePkg, IA32,X64)	10m 50s
Analyze (PcAtChipsetPkg, IA32,X64)	8m 57s
Analyze (PrmPkg, IA32,X64)	10m 19s
Analyze (SecurityPkg, IA32,X64)	13m 8s
Analyze (ShellPkg, IA32,X64)	13m 20s
Analyze (SourceLevelDebugPkg, IA32,X64)	10m 53s
Analyze (StandaloneMmPkg, IA32,X64)	10m 45s
Analyze (UefiCpuPkg, IA32,X64)	13m 13s
Analyze (UnitTestFrameworkPkg, IA32,X64)	12m 33s
	3h 47m 1s

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