Merge pull request numpy#274 from rgommers/contribute

Another edit to graphic design request for contributions

Author: rgommers

content/en/contribute.md

@@ -57,7 +57,7 @@ This website can use your help! We recommend one of two ways to go about this: e
 
 ### Graphic design
 
-We would love to get contributions from graphic designers! This website could be improved in a number of ways (please just browse around, your ideas are probably better than ours!). And we'd be very interested in making, e.g., our tutorials more visually engaging.
+We would love to get contributions from graphic designers! This website could be further improved with new graphics. And we'd be very interested in making, e.g., our tutorials more visually engaging.
 
 
 ### Translating website content