Documentation updates (#407)

* nodejs querying is by oData v4 now

* make the location of the yml file clearer

* add postgres as a db kind

* Apply suggestions from code review

---------

Co-authored-by: Nigel James <nigel.james@plantracker.com.au>
Co-authored-by: René Jeglinsky <rene.jeglinsky@sap.com>

.vscode/settings.json

@@ -5,5 +5,3 @@
     "**/CONTRIBUTING.md": true,
     "**/LICENSE*": true,
     "**/node_modules/": true
-  }
-}

get-started/in-a-nutshell.md

@@ -402,9 +402,9 @@ c.s.c.s.impl.persistence.CsvDataLoader   : Filling sap.capire.bookshop.Books fro
 
 Now that we've a connected, fully capable SQL database, filled with some initial data, we can send complex OData queries, served by the built-in generic providers:
 
-- _[…/Books?$select=ID,title](http://localhost:4004/browse/Books?$select=ID,title)_ {.impl .node}
-- _[…/Authors?$search=Bro](http://localhost:4004/admin/Authors?$search=Bro)_ {.impl .node}
-- _[…/Authors?$expand=books($select=ID,title)](http://localhost:4004/admin/Authors?$expand=books($select=ID,title))_ {.impl .node}
+- _[…/Books?$select=ID,title](http://localhost:4004/odata/v4/browse/Books?$select=ID,title)_ {.impl .node}
+- _[…/Authors?$search=Bro](http://localhost:4004/odata/v4/admin/Authors?$search=Bro)_ {.impl .node}
+- _[…/Authors?$expand=books($select=ID,title)](http://localhost:4004/odata/v4/admin/Authors?$expand=books($select=ID,title))_ {.impl .node}
 - _[…/Books?$select=ID,title](http://localhost:8080/odata/v4/browse/Books?$select=ID,title)_ {.impl .java}
 - _[…/Authors?$search=Bro](http://localhost:8080/odata/v4/AdminService/Authors?$search=Bro)_ {.impl .java}
 - _[…/Authors?$expand=books($select=ID,title)](http://localhost:8080/odata/v4/AdminService/Authors?$expand=books($select=ID,title))_ {.impl .java}

guides/databases-postgres.md

@@ -92,7 +92,7 @@ You can use Docker to run a PostgreSQL database locally as follows:
 
 1. Install and run [Docker Desktop](https://www.docker.com)
 
-2. Create a file like that:
+2. Create the following file in your project root directory:
    ::: code-group
 
    ```yaml [pg.yml]

guides/databases.md

@@ -109,7 +109,7 @@ The previous setups auto-wire things through configuration presets, which are au
 
 The config options are as follows:
 
-- `kind` — a name of a preset, like `sql`, `sqlite`, or `hana`
+- `kind` — a name of a preset, like `sql`, `sqlite`, `postgres`, or `hana`
 - `impl` — the module name of a CAP database service implementation
 - `credentials` — an object with db-specific configurations, most commonly `url`