update contributing.md

CONTRIBUTING.md

@@ -37,19 +37,19 @@ Before making a pull request, make sure to follow below guidelines:
 - Try using bash builtins and string substitution as much as possible.
 - Use printf everywhere instead of echo.
 - Before adding a new logic, be sure to check the existing code.
+- Make sure to add the function in appropriate section based on its operation.
 - Use [shfmt](https://github.com/mvdan/sh) to format the script. Use below command:
 
-    ```shell
-    shfmt upload.sh
-    ```
-
-    The repo already provides the .editorconfig file, which shfmt reads, so no need for extra flags.
-
-    You can also install shfmt for various editors, refer their repo for information.
-
-    Note: This is strictly necessary to maintain consistency, do not skip.
+  ```shell
+  shfmt upload.sh
+  ```
+  
+  The repo already provides the .editorconfig file, which shfmt reads, so no need for extra flags.
+  You can also install shfmt for various editors, refer their repo for information.
+  Note: This is strictly necessary to maintain consistency, do not skip.
 
 - Script should pass all [shellcheck](https://www.shellcheck.net/) warnings, if not, then disable the warning and give a valid reason.
+
 #### Bashdoc guideline
 The documentation is generated based on the function documentation within the script file. So ensure to follow the style so the documentation is 
 properly generated by the generator.