Fix broken links in README.md #13

Job	Run time
CI / Fast / Version	23s
CI / examples / Run Examples (3.11)	6m 39s
CI / Fast / Format Check	20s
CI / ssl_cert / Build SSL-Cert (3.11)	3m 14s
CI / Fast / Generate Build Matrix / python_versions	17s
CI / Slow / Generate Build Matrix / all_versions	18s
CI / Slow / Integration-Tests (Python-3.9, Exasol-7.1.9)	4m 16s
CI / Slow / Integration-Tests (Python-3.10, Exasol-7.1.9)	4m 17s
CI / Slow / Integration-Tests (Python-3.11, Exasol-7.1.9)	4m 16s
CI / Slow / Integration-Tests (Python-3.12, Exasol-7.1.9)	4m 26s
CI / Fast / Docs	28s
CI / Fast / Linting (Python-3.9)	35s
CI / Fast / Linting (Python-3.10)	35s
CI / Fast / Linting (Python-3.11)	41s
CI / Fast / Linting (Python-3.12)	41s
CI / Fast / Security Checks (Python-3.9)	28s
CI / Fast / Security Checks (Python-3.10)	23s
CI / Fast / Security Checks (Python-3.11)	27s
CI / Fast / Security Checks (Python-3.12)	21s
CI / Fast / Type Checking (Python-3.9)	25s
CI / Fast / Type Checking (Python-3.10)	24s
CI / Fast / Type Checking (Python-3.11)	26s
CI / Fast / Type Checking (Python-3.12)	29s
CI / Fast / Unit-Tests (Python-3.9, Exasol-)	42s
CI / Fast / Unit-Tests (Python-3.10, Exasol-)	37s
CI / Fast / Unit-Tests (Python-3.11, Exasol-)	36s
CI / Fast / Unit-Tests (Python-3.12, Exasol-)	51s
CI / Allow Merge	1s
Metrics / report	32s
	38m 8s

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