docs: update README (skills#28)

- rewrite unclear english
- add a transition word

Author: damisparks

README.md

@@ -107,7 +107,7 @@ The following steps will guide you through the process of committing a change on
    Welcome to my GitHub profile!
    ```
    <img alt="profile.md file screenshot" src="/images/my-profile-file.png"/>
-5. For commits, you can enter a short commit message that describes what you changes you made. This helps others know what's included in your commit. GitHub offers a simple default message, but let's change it slightly for practice. Enter `Add PROFILE.md` in the first text-entry field below **Commit new file**. Then, if you want to confirm what your screen should look like, expand the dropdown below.
+5. For commits, you can enter a short commit message that describes what you changes you made. This message helps others know what's included in your commit. GitHub offers a simple default message, but let's change it slightly for practice. First, enter `Add PROFILE.md` in the first text-entry field below **Commit new file**. Then, if you want to confirm what your screen should look like, expand the dropdown below.
    <details>
    <summary> Expand to see the screenshot.</summary>
    <img alt="screenshot of adding a new file with a commit message" src="/images/commit-full-screen.png" />