Extend example file READMEs and fix broken links

This extends the description for the
`README.md` inside the example folders
of the XML, JSON and RDF schemas.

Furthrmore, it fixes some broken links
in the `README.md`s.

schemas/json/examples/README.md

@@ -1,5 +1,9 @@
 # JSON Examples
 
+These are randomly generated examples that fulfil the formalized semantic and syntactic constraints, 
+however due to the random generation, they might not make sense.
+They're best suited for testing your software.
+
 The examples were automatically generated by [aas-core3.0-testgen].
 
 There are two kinds of examples for each class of the meta-model:
@@ -10,5 +14,11 @@ There are two kinds of examples for each class of the meta-model:
 Apart from the two examples, we also generate various additional examples for different properties based on fuzzing.
 For example, see [generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.json].
 
+For more details on the logic behind the generation, please refer to the following two publications:
+- [Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]
+- [Maturity Evaluation of SDKs for I4.0 Digital Twins]
+
 [aas-core3.0-testgen]: https://github.com/aas-core-works/aas-core3.0-testgen
-[generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.json]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.json 
+[generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.json]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed_01.json 
+[Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]: https://www.researchgate.net/publication/366347536_Semi-Automatic_Testing_of_Data-Focused_Software_Development_Kits_for_Industrie_40
+[Maturity Evaluation of SDKs for I4.0 Digital Twins]: https://www.researchgate.net/publication/374055610_Maturity_Evaluation_of_SDKs_for_I40_Digital_Twins

schemas/rdf/examples/README.md

@@ -1,5 +1,9 @@
 # RDF Examples
 
+These are randomly generated examples that fulfil the formalized semantic and syntactic constraints, 
+however due to the random generation, they might not make sense.
+They're best suited for testing your software.
+
 The examples were automatically generated by [aas-core3.0-testgen].
 
 There are two kinds of examples for each class of the meta-model:
@@ -10,5 +14,11 @@ There are two kinds of examples for each class of the meta-model:
 Apart from the two examples, we also generate various additional examples for different properties based on fuzzing.
 For example, see [generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.ttl].
 
+For more details on the logic behind the generation, please refer to the following two publications:
+- [Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]
+- [Maturity Evaluation of SDKs for I4.0 Digital Twins]
+
 [aas-core3.0-testgen]: https://github.com/aas-core-works/aas-core3.0-testgen
-[generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.ttl]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.ttl 
+[generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.ttl]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed_01.ttl 
+[Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]: https://www.researchgate.net/publication/366347536_Semi-Automatic_Testing_of_Data-Focused_Software_Development_Kits_for_Industrie_40
+[Maturity Evaluation of SDKs for I4.0 Digital Twins]: https://www.researchgate.net/publication/374055610_Maturity_Evaluation_of_SDKs_for_I40_Digital_Twins

schemas/xml/examples/README.md

@@ -1,5 +1,9 @@
 # XML Examples
 
+These are randomly generated examples that fulfil the formalized semantic and syntactic constraints, 
+however due to the random generation, they might not make sense.
+They're best suited for testing your software.
+
 The examples were automatically generated by [aas-core3.0-testgen].
 
 There are two kinds of examples for each class of the meta-model:
@@ -10,6 +14,12 @@ There are two kinds of examples for each class of the meta-model:
 Apart from the two examples, we also generate various additional examples for different properties based on fuzzing.
 For example, see [generated/annotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.xml].
 
+For more details on the logic behind the generation, please refer to the following two publications:
+- [Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]
+- [Maturity Evaluation of SDKs for I4.0 Digital Twins]
+
 [aas-core3.0-testgen]: https://github.com/aas-core-works/aas-core3.0-testgen
-[generated/annotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.xml]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.xml 
+[generated/annotatedRelationshipElement/idShortOverPatternExamples/fuzzed\_01.xml]: generated/AnnotatedRelationshipElement/idShortOverPatternExamples/fuzzed_01.xml
+[Semi-Automatic Testing of Data-Focused Software Development Kits for Industrie 4.0]: https://www.researchgate.net/publication/366347536_Semi-Automatic_Testing_of_Data-Focused_Software_Development_Kits_for_Industrie_40
+[Maturity Evaluation of SDKs for I4.0 Digital Twins]: https://www.researchgate.net/publication/374055610_Maturity_Evaluation_of_SDKs_for_I40_Digital_Twins