updated reddit links for ethstaker community#318

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resourcefulmind:fix/updated_eth_stakers_reddit_community_handle_in_S00_intro_L6_keeping_up_with_blockchain_developmentresourcefulmind/Blockchain-Developer-Bootcamp:fix/updated_eth_stakers_reddit_community_handle_in_S00_intro_L6_keeping_up_with_blockchain_developmentCopy head branch name to clipboard