R: rewording

software/r.rst

@@ -19,12 +19,13 @@ Packages
 --------
 
 Some packages are already installed globally, for every other dependency you
-can just go ahead and install them on your own. All the nodes and the master
-node share your home directory so you only need to install the packages once
-and they'll be available with your jobs.
-Note that you should install the packages on the master as development files
-are usually not distributed to the execution nodes.
-Also, if you change the minor or major version of R (3.5.x to 3.6.x or 3.x ->
+can just go ahead and install them on your own (Answer `yes` if you are asked
+`Would you like to use a personal library instead?`).
+All the nodes and the master node share your home directory so you only need to
+install the packages once and they'll be available with your jobs.  Note that
+you should install the packages on the master as development files are usually
+not distributed to the execution nodes.  Also, if you change the minor or major
+version of R (3.5.x to 3.6.x or 3.x ->
 4.x) it's necessary to rebuild your packages.
 
 .. code-block:: r