tweak twtb 15

Signed-off-by: Jin Mingjian <jin.phd@gmail.com>

Author: jinmingjian

_thisweek/2021-08-11-tw_15.md

@@ -20,7 +20,7 @@ As a long-term open source advocate, I personally reflect on things happened aro
 
 What kind of open source community do we want to build? Same type project naming collision/confusion is bad. Non-real-world eye-catching benchmark is terrible. Copycat is anti-license in that a business-friendly license does not mean copyright can not be respected. Github-stars-buying is the direct attack and damage to the whole open source community. 
 
-The spirit of open source is the contribution rather than request. When everyone is using and benefiting from open source codes, we should respect these codes and the communities behind them in a way, we should be in awe of the spirit of open source. 
+The spirit of open source is the contribution rather than request. When everyone is using and benefiting from open source codes, you should respect these codes and the communities behind them in a way, you should be in awe of the spirit of open source. This is the cornerstone of the open source movement.
 
 ## Help Wanted