style fixes in police killings README

Author: andrewflowers

police-killings/README.md

@@ -2,9 +2,9 @@
 
 This directory contains the data behind the story [Where Police Have Killed Americans In 2015](http://fivethirtyeight.com/features/where-police-have-killed-americans-in-2015).
 
-We linked entries from the [Guardian's database on police killings](http://www.theguardian.com/us-news/ng-interactive/2015/jun/01/the-counted-map-us-police-killings) to census data from the American Community Survey. The Guardian data was downloaded on June 2, 2015. More information about their database is available [here](http://www.theguardian.com/us-news/ng-interactive/2015/jun/01/about-the-counted).
+We linked entries from the [Guardian's database on police killings](http://www.theguardian.com/us-news/ng-interactive/2015/jun/01/the-counted-map-us-police-killings) to census data from the American Community Survey. The Guardian data was downloaded on June 2, 2015. More information about its database is available [here](http://www.theguardian.com/us-news/ng-interactive/2015/jun/01/about-the-counted).
 
-Census data was calculated at the tract level from the 2015 5-year American Community Survey using the tables `S0601 (demographics)`, `S1901 (tract-level income and poverty)`, `S1701 (employment and education)` and `DP03 (county-level income)`. Census tracts were determined by geocoding addresses to latitude/longitude using the Bing Maps and Google Maps APIs, then overlaying points onto 2014 Census tracts. GEOIDs are Census-standard and should be easily joinable to other ACS tables -- let us know if you find anything interesting.
+Census data was calculated at the tract level from the 2015 5-year American Community Survey using the tables `S0601 (demographics)`, `S1901 (tract-level income and poverty)`, `S1701 (employment and education)` and `DP03 (county-level income)`. Census tracts were determined by geocoding addresses to latitude/longitude using the Bing Maps and Google Maps APIs and then overlaying points onto 2014 census tracts. GEOIDs are census-standard and should be easily joinable to other ACS tables -- let us know if you find anything interesting.
 
 Field descriptions: