Fix typo in 1994/dodsond2/README.md

1994/dodsond2/README.md

@@ -31,7 +31,7 @@ For more detailed information see [1994 dodsond2 in bugs.md](/bugs.md#1994-dodso
 ## Alternate code:
 
 This version allows you to choose how many arrows to start with, instead of the
-default 0. If one tried specifying a value < 0 it will set it to 0.
+default 0. If one tries specifying a value < 0 it will set it to 0.
 
 Fun fact: this version helped uncover and fix a bug that prevented the entry
 from working in some cases.