Typo fix.

diff --git a/history.adoc b/history.adoc
index b3fa0ac00d7ad19b63a4df4ee2b447e9e57701c9..6f86faca6b100e971dd570b5ae29361b3e5b73ec 100644 (file)
--- a/history.adoc
+++ b/history.adoc
@@ -15,7 +15,7 @@ Kentucky, including fewer of the D&D-like elements now associated with
 the game.
 
 Adventure as we now know it, the ancestor of all later versions, was
-released on a PDP-10 at the Stanford AI Lab by Don Woods on June 3r,
+released on a PDP-10 at the Stanford AI Lab by Don Woods on June 3rd,
 1977 (some sources erroneously say 1976). That version is sometimes
 known as 350-point Adventure.