documentation review

README.md

@@ -1,4 +1,18 @@
 # git
 
 ## change origin url
-git remote set-url origin $giturl
+
+```bash
+git remote set-url origin <origin-url>
+```
+
+## Create new branch from uncommited
+
+```bash
+git switch -c <new-branch>
+
+# or
+
+git checkout -b <new-branch>
+
+```