talks: Fix misleading constant expression in taste.slide

The current text has "third=1/3", but 1/3 = 0. Make it 1.0/3 instead.

Change-Id: I19ea0e7ceb73b5526f53d62aa4308c8530d4eae6
Reviewed-on: https://go-review.googlesource.com/8162
Reviewed-by: Robert Griesemer <gri@golang.org>
diff --git a/2014/taste.slide b/2014/taste.slide
index e0edb36..dbdf2b8 100644
--- a/2014/taste.slide
+++ b/2014/taste.slide
@@ -42,7 +42,7 @@
 
 - Maintained precisely:
 	const e = 2.71828182845904523536028747135266249775724709369995957496696763
-	const third = 1/3
+	const third = 1.0/3
 - Typed or without type:
 	const M64 int64 = 1<<20
         const M = 1<<20