mysqlcheck: add page (#10154)

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/common/mysqlcheck.md

@@ -0,0 +1,20 @@
+# mysqlcheck
+
+> Check and repair MySQL tables.
+> More information: <https://dev.mysql.com/doc/refman/8.0/en/mysqlcheck.html>.
+
+- Check a table:
+
+`mysqlcheck --check {{table}}`
+
+- Check a table and provide credentials to access it:
+
+`mysqlcheck --check {{table}} --user {{username}} --password {{password}}`
+
+- Repair a table:
+
+`mysqlcheck --repair {{table}}`
+
+- Optimize a table:
+
+`mysqlcheck --optimize {{table}}`