godoc: fix spelling error

R=r, r2
CC=golang-dev
https://golang.org/cl/4289079
diff --git a/lib/godoc/search.txt b/lib/godoc/search.txt
index eff4d36..967c1ac 100644
--- a/lib/godoc/search.txt
+++ b/lib/godoc/search.txt
@@ -46,9 +46,9 @@
 {.end}
 {.section Textual}
 {.section Complete}
-{Found} TEXTUAL OCCURENCES
+{Found} TEXTUAL OCCURRENCES
 {.or}
-MORE THAN {Found} TEXTUAL OCCURENCES
+MORE THAN {Found} TEXTUAL OCCURRENCES
 {.end}
 
 {.repeated section @}