DOC: config: fix typo about map_*_key converters

Fix a doc typo that was introduced with ca4758378 ("MINOR: map: add
map_*_key converters to provide the matching key").

No backport needed unless ca4758378 is.

diff --git a/doc/configuration.txt b/doc/configuration.txt
index 406a6bb0130c0de5a751688d8243b81fcf075fbd..1e80610471ebe363928c94efc32146aaf665ab82 100644 (file)
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -19328,8 +19328,8 @@ map_<match_type>_<output_type>(<map_name>[,<default_value>])
   expression and modify the output replacing back reference (like "\1") by
   the corresponding match text.
 
-  Output type "key" means that it its the matched entry's key (as found in the
-  map file)that will be returned as a string instead of the value. Note that
+  Output type "key" means that it is the matched entry's key (as found in the
+  map file) that will be returned as a string instead of the value. Note that
   optional <default_value> argument is not supported when "key" output type is
   used.