Merge pull request #81 from EdwardBetts/spelling

correct spelling mistake

diffmatchpatch/patch.go

diff --git a/diffmatchpatch/patch.go b/diffmatchpatch/patch.go
index 116c043..4f9f202 100644
--- a/diffmatchpatch/patch.go
+++ b/diffmatchpatch/patch.go
@@ -29,7 +29,7 @@
 
 // String emulates GNU diff's format.
 // Header: @@ -382,8 +481,9 @@
-// Indicies are printed as 1-based, not 0-based.
+// Indices are printed as 1-based, not 0-based.
 func (p *Patch) String() string {
 	var coords1, coords2 string