Readme/update contributing guidelines

README.md

@@ -95,6 +95,21 @@ Changes to `package-lock.json` and `yarn.lock` files should only be committed wh
 - Updating an existing dependency: Running an update for a package will adjust these files to reflect the new versions.
 - Removing a dependency: Uninstalling a package will update these files to remove the reference to the dependency.
 
+### Content File Formats
+
+**Use `.md` or `.mdx` file formats** MDX is a markdown format that allows embedded JSX components for more flexibility. Refer to the Docusaurus Docs page [MDX and React](https://docusaurus.io/docs/markdown-features/react) for information on MDX syntax and capabilities.
+
+**Always link using explicit heading IDs** when adding or editing headings in a `.md` or `.mdx` file. This prevents broken links if heading text changes later. For example:
+
+```markdown
+    ### My Important Section{#my-important-section}
+```
+  Then, you can link to this section using:
+
+ ```markdown
+    [Link to my section](#my-important-section)
+ ```
+
 ### Add or Edit Feature Cards
 
 Feature Cards on the website homepage highlight the key features of the PEcAn Project.
@@ -118,7 +133,7 @@ You should use SVG images when available.
 
 The people page contains details of the PEcAn team. The image here is a representation of how the page should look like with placeholder values.
 
-![PecanPople](screenshots/pecanPeople.png)
+![PecanPeople](screenshots/pecanPeople.png)
 
 ```javascript
 const contributors = [
@@ -177,13 +192,16 @@ tags: [gsoc, gsoc21]
 ---
 ```
 
+
+<!-- These screenshots are large and don't appear to be in the right place, if necessary
 ## Screenshots
 
 This section contains screenshots of website's homepage in light and dark theme.
 
 ![LightTheme](screenshots/light.png)
 
 ![DarkTheme](screenshots/dark.png)
+-->
 
 ## Next Steps