TDB (resp): proofread the `Migrations` section

[xuniq]

Epic: #4257
Product: Tarantool DB (redis)
Source: TBD (not implemented yet)
Root document: TBD
SME: @ AlgebraicWolf @ Galiev-Ruslan @ LeonidVas

Definition of done

• proofread the section: language, style, formatting
• translate to Russian
• add and update links if needed