typo fix

content/environments.md

@@ -18,7 +18,7 @@
 Imagine if you didn't have to install things yourself, but instead you could
 get a computer with the exact software for a task pre-installed?  Containers
 effectively do that, with various advantages and disadvantages.  They are
-**like an entire operating system with software installed, all in one file**,
+**like an entire operating system with software installed, all in one file**.
 
 ```{figure} img/docker_meme.jpg
 :alt: He said, then we will ship your machine. And that's how Docker was born.
@@ -283,4 +283,4 @@ the Docker containers through Singularity/Apptainer.
 ```{keypoints}
 - Containers can be helpful if complex setups are needed to running a specific software
 - They can also be helpful for prototyping without "messing up" your own computing environment, or for running software that requires a different operating system than your own
-```
+```