Fixed unintentional change to ProjectVersion.txt

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2019.4.9f1
-m_EditorVersionWithRevision: 2019.4.9f1 (50fe8a171dd9)
+m_EditorVersion: 2020.1.8f1
+m_EditorVersionWithRevision: 2020.1.8f1 (22e8c0b0c3ec)
+