DATAJPA-876 - Typo fix.

Author: mp911de

src/main/asciidoc/jpa.adoc

@@ -460,7 +460,7 @@ DROP procedure IF EXISTS plus1inout
 /;
 CREATE procedure plus1inout (IN arg int, OUT res int)
 BEGIN ATOMIC
- set res = arg ` 1;
+ set res = arg + 1;
 END
 /;
 ----