Merge pull request nus-cs2103-AY2021S1#67 from GeNiaaz/fix-teamlist-view-picture

Fix image names in AboutUs to work on teamlist site

Author: lucastai98

docs/AboutUs.md

@@ -46,7 +46,7 @@ You can reach us at the email `seer[at]comp.nus.edu.sg`
 
 ### Tan Chia Qian
 
-<img src="images/TCQian.png" width="200px">
+<img src="images/tcqian.png" width="200px">
 
 [[github](http://github.com/TCQian)]