DZT Guide Update - 21.11.2023

This update introduces several changes and additions to the Guides section of the changelog.

List of changes:

1. Updates on Optimisations
   1. Adding the description for Filtering for given DS Lists:
      https://changelog-dzt-kg.readme.io/docs/optimisations#filter-for-given-domain-specifications
   2. Adding an example https://changelog-dzt-kg.readme.io/docs/optimisations#example
2. Adding a ShapeQuery example to search for objects in or around Jena
   https://changelog-dzt-kg.readme.io/docs/simple-example#search-for-objects-in-or-around-a-given-city
3. Adding information to the Query API
   1. After the query call a retrieval call is required:
      https://changelog-dzt-kg.readme.io/docs/query-api#fetching-the-full-instances
   2. All languages are in the response:
      https://changelog-dzt-kg.readme.io/docs/query-api#multilingual-data
4. Adding a new Data Access Use Case:
   POIs in and around Berlin
5. Several typos were fixed all over the document.