Merge pull request #5 from Pseudo-Lab/master

PR: from head repo(p-lab) to base repo(my git repo)

Author: hwaneest

.DS_Store

@@ -0,0 +1,9 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+#### Release: Tutorial-Book 0.1.0 | Release Date: June 10, 2021 (SEVERAL TYPO FIX)
+
+- Fixed typos found during translating OD, TS tutorials
+- Fixed output image issues on OD-ch4
+  <br/><br/><br/>
+