[6.0] e8e6a2db4 Typo

[Dridi Boukelmoune]

commit e8e6a2db4487722eed9a313012d1ba132267b2a1
Author: Geoff Simmons <geoff at uplex.de>
Date:   Tue Aug 7 12:46:46 2018 +0200

    Typo

diff --git a/lib/libvmod_std/vmod.vcc b/lib/libvmod_std/vmod.vcc
index c46d24156..87bcca003 100644
--- a/lib/libvmod_std/vmod.vcc
+++ b/lib/libvmod_std/vmod.vcc
@@ -377,7 +377,7 @@ Description
 
 	* ? matches a single character
 
-	* a bracket expresion such as [abc] or [!0-9] is interpreted
+	* a bracket expression such as [abc] or [!0-9] is interpreted
 	  as a character class according to the rules of basic regular
 	  expressions (*not* PCRE regexen), except that ! is used for
 	  character class negation instead of ^.