fix wording surrounding which datasets are automatically approved

data.md

@@ -15,6 +15,6 @@ kernelspec:
 # Data
 
 Dr. Robin Donatello hosts a number of datasets on her website:
-<https://www.norcalbiostat.com/data/>.  You can use any of these
-datasets for practice or for the Exploratory Data Analysis Project
-which concludes MATH 131.
+<https://www.norcalbiostat.com/data/>.  Consider using the datasets
+`Email Spam`, `HIV`, `Depression`, or `Police Shootings` for the
+Exploratory Data Analysis Project which concludes MATH 131.

week-05.md

@@ -96,10 +96,8 @@ of Dr. D’s teaching course website. Here are some viable choices:
 * Police Shootings: Characteristics of individuals killed by police in
   2015.
 
-Any other data sets require instructor approval. Data sets such as the
-plants or arm strength data sets are insufficiently complex for this
-project. Also you can’t use the dsmall, diamonds, or NCbirths data
-sets because we’ve used them too much already.
+Any other datasets, and/or any that we've already used in class
+require instructor approval.
 
 ## How to submit