Update README.md

Author: ajeetraina

README.md

@@ -55,7 +55,7 @@
 
 ## Industry Use cases
 
-| Title       | Topics Covered         | Category | Labs |
+| Title       | Topics Covered         | Labs |
 |:-------------|:------------------|:------|:------|
 | [Docker for AI](https://github.com/collabnix/dockerlabs/tree/master/workshop/ai) | Docker for Data Scientist | 1 |
 | Docker for Gaming | Gaming | Not Started|