update About

About.md

@@ -3,17 +3,17 @@
 ## Submit Skill
 
 1. Switch to the Tab of **Submit here!**
-2. Enter the repo id of your skill-library space, such as "timedomain/skill-library"
+2. Enter the repo id of your skill-library space, such as "timedomain/skill-library".
 3. Enter the skill name and press the Enter key. You can enter multiple skill names. Press the Enter key each time to confirm.
-4. Click Submit to submit
+4. Click Submit to submit.
 
 
 
 ## 提交技能
 
-1. 切换到**Submit here!**的选项卡
+1. 切换到 **Submit here!** 的选项卡。
 
-2. 输入你的skill-library space的repo id，比如"timedomain/skill-library"
-3. 输入Skill name，按下回车键确认。可以输入多个skill name，每次都要按下回车键确认。
-4. 点击Submit提交
+2. 输入你的skill-library space的repo id，比如"timedomain/skill-library"。
+3. 输入skill name，按下回车键确认。可以输入多个skill name，每次都要按下回车键确认。
+4. 点击Submit提交。