fixed some bugs in examples of [[:...:]] ccls

diff --git a/flex.1 b/flex.1
index cf1543e6e9507f13eed9b97b26bdfdabaf2ebe88..522fc784e00b27d10470416bae62389a612d97bf 100644 (file)
--- a/flex.1
+++ b/flex.1
@@ -490,8 +490,8 @@ For example, the following character classes are all equivalent:
 .nf
 
     [[:alnum:]]
-    [[:alpha:][:digit:]
-    [[:alpha:]0-9]
+    [[:alpha:][:digit:]]
+    [[:alpha:][0-9]]
     [a-zA-Z0-9]
 
 .fi