Update 01-what-is-git.md

_episodes/01-what-is-git.md

@@ -35,15 +35,15 @@ We often hear the terms **_Git_** and **_GitHub_** used interchangeably but they
 
 **_Git_** is one of the most widely used version control systems in the world. It is a free, open source tool that can be downloaded to your local machine and used for logging all changes made to a group of designated computer files (referred to as a "git repository" or "repo" for short) over time. It can be used to control file versions locally by you alone on your computer, but is perhaps most powerful when employed to coordinate simultaneous work on a group of files shared among distributed groups of people. 
 
-Rather than emailing documents with tracked changes and some comments and renaming different versions of files (example.txt, exampleV2.txt, exampleV3.text) to differentiate them, we can use Git to save (or in Git parlance, "commit") all that information with the document itself. This makes it easy to get an overview of all changes made to a file over time by looking at a log of all the changes that have been made. And all earlier versions of each file still remain in their original form: they are not overwritten, should we ever wish to "roll back" to them. 
+Rather than emailing documents with tracked changes and some comments and renaming different versions of files (example.txt, exampleV2.txt, exampleV3.txt) to differentiate them, we can use Git to save (or in Git parlance, "commit") all that information with the document itself. This makes it easy to get an overview of all changes made to a file over time by looking at a log of all the changes that have been made. And all earlier versions of each file still remain in their original form: they are not overwritten, should we ever wish to "roll back" to them. 
 
-Git was originally developed to help software developers work collaboratively on software projects, but it can be and is used for managing revisions to any file type on a computer system, including text documents. Once installed, interaction with Git is done through the Command Prompt in Windows, or the Terminal on Mac/Linux. Since Word documents contain special formatting, Git unfortunately cannot version control those, nor can it version control PDFs, though both file types can be stored in Git repositories.   
+Git was originally developed to help software developers work collaboratively on software projects, but it can be and is used for managing revisions to any file type on a computer system, including text documents and spreadsheets. Once installed, interaction with Git is done through the Command Prompt in Windows, or the Terminal on Mac/Linux. Since Word documents contain special formatting, Git unfortunately cannot version control those, nor can it version control PDFs, though both file types can be stored in Git repositories.   
 
 *How can understanding Git help with work in libraries?*
 * Enables you to contribute to, collaborate on, and support digital research projects 
 * Enables you to control changes to your files over time without keeping multiple copies of those files
 
-**_GitHub_** on the other hand is a popular website for hosting and sharing Git repositories remotely. It offers a web interface and provides functionality and a mixture of both free and paid services for working with such repositories. The majority of the content that GitHub hosts is open source software, though increasingly it is being used for other projects such as open access journals (e.g. [Journal of Open Source Software](https://joss.theoj.org/)), blogs, and constantly updated text books. 
+**_GitHub_** on the other hand is a popular website for hosting and sharing Git repositories remotely. It offers a web interface and provides functionality and a mixture of both free and paid services for working with such repositories. The majority of the content that GitHub hosts is open source software, though increasingly it is being used for other projects such as open access journals (e.g. [Journal of Open Source Software](https://joss.theoj.org/)), blogs, and regularly updated text books. 
 
 *How can GitHub help with work in libraries?* 
 * A place to discover and reuse ("fork") a huge amount of openly licensed digital projects and open source software