Normalize git URLs in Cargo.toml.
Normalize git URLs in Cargo.toml.

tomaka/hematite,bvssvni/hematite,toqueteos/hematite,fenhl/hematite,0x73/hematite,LeeRisk/hematite,PistonDevelopers/hematite,LeeRisk/hematite,0x73/hematite,bvssvni/hematite,tomaka/hematite,toqueteos/hematite,fenhl/hematite,PistonDevelopers/hematite