Fix typo

Author: titsuki

doc/Language/nativecall.pod6

@@ -818,7 +818,7 @@ Prepare your system along these lines before trying out the examples:
 
 =for code :lang<shell>
 $ mysql -u root -p
-SET PASSWROD = PASSWORD('sa');
+SET PASSWORD = PASSWORD('sa');
 DROP DATABASE test;
 CREATE DATABASE test;