Fixed all possible 404 errors from README.md

I have fixed all the image linking errors which are from the Github status

Author: SachinDabhade

2-Working-With-Data/05-relational-databases/translations/README.hi.md

@@ -1,6 +1,6 @@
 # डेटा के साथ कार्य करना: संबंधपरक डेटाबेस
 
-|![ Sketchnote by [(@sketchthedocs)](https://sketchthedocs.dev) ](../../sketchnotes/05-RelationalData.png)|
+|![ Sketchnote by [(@sketchthedocs)](https://sketchthedocs.dev) ](/sketchnotes/05-RelationalData.png)|
 |:---:|
 | डेटा के साथ कार्य करना: संबंधपरक डेटाबेस - _Sketchnote by [@nitya](https://twitter.com/nitya)_ |
 
@@ -178,4 +178,4 @@ WHERE rainfall.year = 2019
 
 ## कार्यभार
 
-[असाइनमेंट शीर्षक](assignment.md)
+[असाइनमेंट शीर्षक](assignment.md)