move rebase -i examples into intro

2019/2019-09-09_testCourseAdv/slides/rebase-iExample.md

-## Interactive Rebasing
-
-```bash
-#  p, pick = use commit
-#  r, reword = use commit, but edit the commit message
-#  e, edit = use commit, but stop for amending
-#  s, squash = use commit, but meld into previous commit
-#  f, fixup = like "squash", but discard this commit's log message
-#  x, exec = run command (the rest of the line) using shell
-```

2019/2019-09-09_testCourseAdv/slides/rebase-iIntro.md

@@ -5,4 +5,13 @@ git rebase -i <branch>
 ```
 
 * Enables more precise control over the rebased commits
-* Before committing many actions are at disposal
\ No newline at end of file
+* Before committing many actions are at disposal
+
+```bash
+#  p, pick = use commit
+#  r, reword = use commit, but edit the commit message
+#  e, edit = use commit, but stop for amending
+#  s, squash = use commit, but meld into previous commit
+#  f, fixup = like "squash", but discard this commit's log message
+#  x, exec = run command (the rest of the line) using shell
+```
\ No newline at end of file