Update README file

[germartinez]

Context

This PR:

• Updates the README file content
• Fixes some broken links (not really broken) highlighted by the linkcheker.

[github-actions]

Overall readability score: 66.63 (🔴 -0.18)

File	Readability
glossary.md	55.47 (🟢 +0)
README.md	71.24 (🔴 -8.36)

View detailed metrics

🟢 - Shows an increase in readability
🔴 - Shows a decrease in readability

File	Readability	FRE	GF	ARI	CLI	DCRS
glossary.md	55.47	40.35	9.79	12.2	13.8	7.44
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0
README.md	71.24	52.66	7.55	8.7	11.46	6.97
	🔴 -8.36	🔴 -10.8	🔴 -0.32	🔴 -2.2	🔴 -2.92	🟢 +0.4

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	66.63	56.86	9.46	10.18	10.89	7.19
	🔴 -0.18	🔴 -0.23	🔴 -0.01	🔴 -0.05	🔴 -0.06	🟢 +0.01

View metric targets

Metric	Range	Ideal score
Flesch Reading Ease	100 (very easy read) to 0 (extremely difficult read)	60
Gunning Fog	6 (very easy read) to 17 (extremely difficult read)	8 or less
Auto. Read. Index	6 (very easy read) to 14 (extremely difficult read)	8 or less
Coleman Liau Index	6 (very easy read) to 17 (extremely difficult read)	8 or less
Dale-Chall Readability	4.9 (very easy read) to 9.9 (extremely difficult read)	6.9 or less

[germartinez]

Note: The previous image was not visible in light mode. Removing it for now.

[tanay1337]

Thanks, @germartinez