mariadb: add page

[TreeOfJuly]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/mariadb.md:10: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)

Please fix the error(s) and push again.

[spageektti]

Suggested change

	- Connect to a specific MariaDB database {{db_name}} using {{user_name}} and {{your_password}}:
	- Connect to a specific MariaDB database using username and password:

[CleanMachine1]

Thanks for your contribution!

[CleanMachine1]

Suggested change

	- Display help and exit:
	- Display help:

[CleanMachine1]

Suggested change

	`mariadb -?, --help`
	`mariadb --help`

[CleanMachine1]

Suggested change

	`mariadb -s, --silent`
	`mariadb {{-s,-ss,-sss}}`

Please fix this accordingly, I'm unsure if its correct, but based on most commands, 3 s is probably the max.

[CleanMachine1]

Suggested change

	- Be more silent. Can be used multiple times to produce less output:
	- Display less verbose outputs:

[CleanMachine1]

Suggested change

	`mariadb {{db_name}} < {{/path/to/script.sql}} > {{/path/to/output.tab}}`
	`mariadb {{db_name}} < {{path/to/script.sql}} > {{path/to/output.tab}}`

We use relative paths when available.

[CleanMachine1]

Suggested change

	- Execute SQL statements in a script file (batch file):
	- Execute SQL statements from a script file:

[CleanMachine1]

Suggested change

	`mariadb -S, --socket={{/path/to/socket_name}}`
	`mariadb -S, --socket={{path/to/socket_name}}`

[CleanMachine1]

Suggested change

	- For connections to local host , Unix socket file to use, or on Windows, the name of the named pipe to use:
	- Connect using a socket file for local connections: