Correct spelling of minimum in Tips tab (seanprashad#159)

Author: seanprashad

src/components/Tips/index.js

@@ -31,7 +31,7 @@ If must solve in-place then
 - Swap corresponding values
 - Store one or more different values in the same pointer
 
-If asked for maximum/minumum subarray/subset/options then
+If asked for maximum/minimum subarray/subset/options then
 - Dynamic programming
 
 If asked for top/least K items then