Update README to change 'UML map' to 'structural map'

Author: Indranil17

README.md

@@ -93,7 +93,7 @@ For interactive 3D plots of clustering, CRISP utilises the seaborn package. Ensu
 To learn how to use each of the modules, please visit [examples](https://github.com/Indranil17/CRISP_HOST/tree/main/example).
 Inside the example folder, check the [Notebook](https://github.com/Indranil17/CRISP_HOST/blob/main/example/Introductory_Tutorial/CRISP_Introdcutory_Tutorial.ipynb) to see them in use and also check the other folders of the example folder to see the outputs.
 It has two sub-packages and ten modules.  
-Please see the package's UML map below. 
+Please see the package's structural map below. 
 
 <img src="https://github.com/Indranil17/CRISP_HOST/blob/main/crisp_map.png" width="800">