README.md: use a different image to showcase complex table

[coveralls]

Pull Request Test Coverage Report for Build 4080499338

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

---

Totals
Change from base Build 3880059485:	0.0%
Covered Lines:	3264
Relevant Lines:	3264

---

💛 - Coveralls

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information