docs: gitbook-27: update git reset

docs: gitbook-28: update pages

docs: gitbook-26: update level name and add link in inventory

docs: gitbook-25: update README.md

docs: gitbook-24: update README.md

docs: gitbook-23: update inventory

docs: gitbook-22: No subject

docs: gitbook-21: change table width

docs: gitbook-20: update readme journey

docs: gitbook-19: No subject

docs: update README.md

docs: gitbook-18: update title level

docs: gitbook-17: update journey

docs: gitbook-15: update pages

docs: udate README.md