DOC: Minor typo fix - 'question mark' -> 'exclamation mark'
Signed-off-by: Kunal Gangakhedkar <kunal.gangakhedkar@gmail.com>
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 556e977..0ee901c 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -813,8 +813,8 @@
- a non-nul integer (e.g. '1'), always returns "true".
- a predicate optionally followed by argument(s) in parenthesis.
- a condition placed between a pair of parenthesis '(' and ')'
- - a question mark ('!') preceding any of the non-empty elements above, and
- which will negate its status.
+ - an exclamation mark ('!') preceding any of the non-empty elements above,
+ and which will negate its status.
- expressions combined with a logical AND ('&&'), which will be evaluated
from left to right until one returns false
- expressions combined with a logical OR ('||'), which will be evaluated