minor cleanup

Author: s-sajid-ali

docs/hpc/03_navigating_the_cluster/02_hpc_foundations.mdx

@@ -223,8 +223,7 @@ As you can see, we encounter an error like the one below:
 [pp2959@log-3 ~]$
 ```
 
-`apt-get` does not exist, this is because package managers are not allowed on the cluster as they require `root` privileges for installation.
-You will need to load pre-installed software pacakges with a command called `module`. 
+`apt-get` is not available to users as it requires `root` priviliges which the users do not get.You will need to load pre-installed software pacakges with a command called `module`. 
 
 First, let's search for any versions of `lua` available by running the command `module spider <Software_Package>`: