mysql: remove "or" example + fix token syntax

The "or" example breaks tools that assume 1 command example per description

pages/common/mysql.md

@@ -2,18 +2,14 @@
 
 > the MySQL command-line tool 
 
-- Connect to database *database_name*
+- Connect to a database
 
 `mysql {{database_name}}`
 
-- Connect to database *database_name* using *user* and *password* credentials.
+- Connect to a database using credentials
 
 `mysql -u {{user}} -p{{password}} {{database_name}}`
 
-or
-
-`mysql --user={{user}} --password={{password}} {{database_name}}`
-
 - Execute SQL statements in a script file (batch file)
 
-`mysql {database_name} < script.sql`
+`mysql {{database_name}} < {{script.sql}}`