To prepare rice, bring first 4 ingredients to a boil in a medium saucepan; stir in rice. Cover, reduce heat, and simmer 15 minutes or until liquid is absorbed.
To prepare stir-fry, heat 1/2 teaspoon oil in a large nonstick skillet over medium-high heat. Add half of beef; stir-fry 4 minutes or until done. Remove from pan; cover and keep warm. Repeat procedure with remaining oil and beef.
Add onion and bell pepper to pan; stir-fry 5 minutes. Add bok choy; stir-fry 3 minutes or until vegetables are tender. Add beef, cilantro, chili garlic sauce, 1/4 teaspoon salt, and black pepper; cook 2 minutes or until thoroughly heated. Serve with rice and lime wedges.