Reword contribution guidelines

educational-resources/contributing.md

@@ -1,7 +1,7 @@
 # Contributing a Resource
 
 Thanks for your interest in contributing an educational resource! 
-This short, is that there are two approaches to do this: linking to an existing open resource or adding your resource directly to the Python in Chemistry repositories. 
+There are two approaches to do this: linking to an existing open resource or adding your resource directly to the Python in Chemistry repositories. 
 Either way, it is vital that the following conditions are met:
 - Your resource must be shared with an open licence (i.e., [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/))
 - You must identify all of the contributors to the resource (this is most easily done by making the resource a Git repository)
@@ -10,7 +10,7 @@ With these conditions met, please see below for approach-specific guidence.
 
 ## Linking to an Existing Resource
 
-If you want to link an existing resource, please [edit the linked-resources file](https://github.com/pythoninchemistry/pythoninchemistry.github.io/blob/master/educational-resources/linked-resources.md) on Github (click the pen icon to edit), add your resource to the list and therefore open a pull request on the repository. 
+If you want to link an existing resource, please [edit the linked-resources file](https://github.com/pythoninchemistry/pythoninchemistry.github.io/blob/master/educational-resources/linked-resources.md) on Github (click the pen icon to edit), add your resource to the list, commit your changes, and open a pull request on the repository. 
 We will try to address your pull request as soon as possible. 
 Please follow the format of the other resources in the list, i.e., including a name for the resource, and the host organisation.