Update part11c.md : Minor Typo

Corrected a small typo in section 11c. 

From : so you can also do the both the exercise sets

To : so you can also do both the exercise sets

Author: ronsamgeorge

src/content/11/en/part11c.md

@@ -52,7 +52,7 @@ Let's define some things we **want** in this hypothetical deployment system too:
  - We would like it to be fast
  - We'd like to have no downtime during the deployment (this is distinct from the requirement we have for handling user requests just before/during the deployment).
 
-Next we will have three sets of exercises for automazing the deployment with GitHub Actions, one for [Fly.io](https://fly.io/), another one for [Render](https://render.com/) and finally the good old [Heroku](https://heroku.com). The process of deployment is always specific to the particular cloud provider, so you can also do the both the exercise sets if you want to see the differences how these services work with respect to deployments.
+Next we will have three sets of exercises for automazing the deployment with GitHub Actions, one for [Fly.io](https://fly.io/), another one for [Render](https://render.com/) and finally the good old [Heroku](https://heroku.com). The process of deployment is always specific to the particular cloud provider, so you can also do both the exercise sets if you want to see the differences how these services work with respect to deployments.
 
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