DOC: Fixed documentation in table-json-conversion specs.

src/doc/table-json-conversion/specs.md

@@ -61,26 +61,7 @@ these records are referenced.
 
 Let's now consider these four cases in detail and with examples:
 
-### a. Properties with Primitive Data Types ###
-
-```JSON
-{
-    "Training": {
-        "date": "2023-01-01",
-        "url": "www.indiscale.com",
-        "duration": 1.0,
-        "participants": 1,
-        "remote": false
-    }
-}
-```
-
-This entry is represented in an XLSX sheet with the following content:
-date	url	duration	participants	remote
-2023-01-01	www.indiscale.com	1.0	1	false
-
-
-### a. Properties mit primitiven Datentypen ###
+### a. Properties with primitive data types ###
 
 ```JSON
 {