[agent_farm] improve the language over here

Updated: Feature card description changed from " without expanding your dev team " to " while keeping your team lean and efficient "
Improved: More inclusive language that maintains the core value proposition while appealing to a wider audience beyond engineering teams

this sentence: Automate tasks, fix bugs, and implement new features without expanding your dev team

is too focussed on engineers, can we make it more general

ACK, on it!