Update examples

[bkoelman]

See the commit messages for details.

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• Adapted tests
• Documentation updated

[codecov]

Codecov Report

Merging #1269 (1fd38be) into master (757dd08) will increase coverage by 0.23%.
The diff coverage is 95.82%.

❗ Current head 1fd38be differs from pull request most recent head e0464f5. Consider uploading reports for the commit e0464f5 to get more accurate results

@@            Coverage Diff             @@
##           master    #1269      +/-   ##
==========================================
+ Coverage   92.60%   92.83%   +0.23%     
==========================================
  Files         243      255      +12     
  Lines        7828     8221     +393     
==========================================
+ Hits         7249     7632     +383     
- Misses        579      589      +10     

Impacted Files	Coverage Δ
...tityFrameworkExample/Repositories/TagRepository.cs	0.00% <0.00%> (ø)
...EntityFrameworkExample/Services/TodoItemService.cs	77.77% <77.77%> (ø)
src/Examples/MultiDbContextExample/Program.cs	93.44% <80.95%> (-6.56%)	⬇️
...ameworkExample/Services/InMemoryResourceService.cs	93.42% <93.42%> (ø)
...tityFrameworkExample/NullSafeExpressionRewriter.cs	96.29% <96.29%> (ø)
...tityFrameworkExample/QueryLayerIncludeConverter.cs	96.42% <96.42%> (ø)
...Examples/NoEntityFrameworkExample/Data/Database.cs	100.00% <100.00%> (ø)
...les/NoEntityFrameworkExample/Data/InMemoryModel.cs	100.00% <100.00%> (ø)
...meworkExample/InMemoryInverseNavigationResolver.cs	100.00% <100.00%> (ø)
...Examples/NoEntityFrameworkExample/Models/Person.cs	100.00% <100.00%> (ø)
... and 9 more