some typos

[arashHaratian]

• in section 2.3.1, "althogh" instead of "although".
• in section 6.4.1, "(\)" instead of "(`)".
• in section 5.3, you used df_co2_dt variable name for readr::read_csv().
• in section 6.5, "co2 dataset" instead of ghg_ems dataset.
• in chapter 10, "Prerequisties" instead of "Prerequisites".