Fix bug whenever MigrationTable name contains "-"

[Coffeeri]

I've noticed, that the table name is not bracket-ed, so that the migration fails whenever the MigrationTable name contains a hypen.

[coveralls]

Pull Request Test Coverage Report for Build 1864495323

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 57.8%

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Totals
Change from base Build 1821224966:	0.0%
Covered Lines:	3731
Relevant Lines:	6455

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💛 - Coveralls