Add note

jcs090218 · jcs090218 · commit 1116f374f36c · 2021-04-09T14:53:34.000+08:00
diff --git a/Assets/WzLib/DLL/README.md b/Assets/WzLib/DLL/README.md
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+This is copy from `C:\Windows\Microsoft.NET\Framework64\v4.0.30319`

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	`1`	+This is copy from `C:\Windows\Microsoft.NET\Framework64\v4.0.30319`