doc: Fix typos/errors in test sql statements

[abmusse]

• ismall test inserts into itiny table instead of ismall
• ipack test inserts into ibig table instead of ipack
• insert into inum sets unsigned numeric to negative value
• create table itinyblob missing closing semicolon
• create table ilongblob missing closing semicolon
• select ilongblob missing closing semicolon
• insert into ibin is out of range
• next insert into ibin misson quotes around hex literal
• create table iyear missing closing semicolon
• insert into iyear missing closing semicolon

Resolves #8