Correct reference docs. [DATAJDBC-483]

[spring-projects-issues]

taeyeon-Kim opened DATAJDBC-483 and commented

 - Add anchor to section on jdbc value in reference docs.

 - Correct Lifecycle Events example in reference

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Referenced from: pull request #189

Backported to: 1.1.5 (Moore SR5), 1.0.16 (Lovelace SR16)