unicode: fix doc typo

LGTM=robert.hencke, iant
R=golang-codereviews, robert.hencke, iant
CC=golang-codereviews
https://golang.org/cl/96230043

diff --git a/src/pkg/unicode/letter.go b/src/pkg/unicode/letter.go
index 3b389e93f14914e91df7b84eef323e4476ef8300..977bd2b3b0594d17d1318975dd1acc4d5cb42228 100644 (file)
--- a/src/pkg/unicode/letter.go
+++ b/src/pkg/unicode/letter.go
@@ -316,7 +316,7 @@ type foldPair struct {
 // SimpleFold iterates over Unicode code points equivalent under
 // the Unicode-defined simple case folding.  Among the code points
 // equivalent to rune (including rune itself), SimpleFold returns the
-// smallest rune >= r if one exists, or else the smallest rune >= 0.
+// smallest rune > r if one exists, or else the smallest rune >= 0.
 //
 // For example:
 //     SimpleFold('A') = 'a'