Make README.md comply with markdownlint

README.md

@@ -1,44 +1,31 @@
+# CIF Ontology
+
 [![CI tests](https://github.com/emmo-repo/CIF-ontology/workflows/CI/badge.svg)](https://github.com/emmo-repo/CIF-ontology/actions/)
 [![DOI](https://zenodo.org/badge/272473769.svg)](https://zenodo.org/badge/latestdoi/272473769)
 
+This repository provides an ontologisation of the CIF Dictionary Definition Language ([DDLm](https://www.iucr.org/resources/cif/ddl/ddlm)) and the [CIF core dictionary](https://www.iucr.org/resources/cif/dictionaries/cif_core) by IUCr.
+The development version of these dictionaries can be found in the [COMCIFS/cif_core](https://github.com/COMCIFS/cif_core) GitHub repository.
 
-CIF Ontology
-============
-This repository provides an ontologisation of the CIF Dictionary
-Definition Language ([DDLm]) and the [CIF core dictionary] by IUCr.
-The development version of these dictionaries can be found in the
-[COMCIFS/cif_core] GitHub repository.
-
-The CIF Ontology has no dependencies to any upper ontology.  But the
-EMMC crystallography task group is providing an EMMO-based
-[Crystallography Domain Ontology] which is based on both the CIF
-Ontology and [EMMO].
-
+The CIF Ontology has no dependencies to any upper ontology.
+But the EMMC crystallography task group is providing an EMMO-based [Crystallography Domain Ontology](https://github.com/emmo-repo/domain-crystallography), which is based on both the CIF Ontology and [EMMO](https://github.com/emmo-repo/EMMO).
 
-Obtaining CIF-ontology
------------------------
-A table with available releases can be found on
-https://emmo-repo.github.io/CIF-ontology/
+## Obtaining CIF-ontology
 
+A table with available releases can be found in [the documentation](https://emmo-repo.github.io/CIF-ontology/).
 
 ### Manually generating the cif core ontology
 
-It is also possible to clone this repository and generate the CIF
-ontology yourselves.
+It is also possible to clone this repository and generate the CIF ontology.
 
 First clone this repository with
 
 ```console
 git clone https://github.com/emmo-repo/CIF-ontology.git
 ```
 
-and then run the `dic2owl` tool following the instructions in the
-[dic2owl/README.md] file.
-
-
+and then run the `dic2owl` tool following the instructions in the [dic2owl/README.md](dic2owl/README.md) file.
 
-Attributions and credits
-------------------------
+## Attributions and credits
 
 ### Contributors
 
@@ -52,33 +39,23 @@ Attributions and credits
 - Joana Morgado, Fraunhofer IWM
 - Stuart Chalk
 
-
 ### Contributing projects
 
 - Demystify ontologies - Internal project at [SINTEF](www.sintef.no)
 - [MarketPlace](https://www.the-marketplace-project.eu/);
   Grant Agreement No: 760173
+  <!-- markdownlint-disable-next-line MD033 -->
   <img src="https://www.the-marketplace-project.eu/content/dam/iwm/the-marketplace-project/images/MARKETPLACE_LOGO_300dpi.png" width="120">
 - [OntoTrans](https://ontotrans.eu/);
   Grant Agreement No: 862136
+  <!-- markdownlint-disable-next-line MD033 -->
   <img src="https://ontotrans.eu/wp-content/uploads/2020/05/ot_logo_rosa_gro%C3%9F.svg" height="50">
 - [BIG-MAP](https://www.big-map.eu/);
   Grant Agreement No: 957189
+  <!-- markdownlint-disable-next-line MD033 -->
   <img src="https://avatars1.githubusercontent.com/u/72801303?s=200&v=4" height="50">
 
-License
--------
+## License
 
 The CIF ontology is released under the [Creative Commons Attribution 4.0 International](https://creativecommons.org/licenses/by/4.0/legalcode) license (CC BY 4.0).
 See also the [LICENSE](LICENSE) file.
-
-
-
-
-[DDLm]: https://www.iucr.org/resources/cif/ddl/ddlm
-[CIF core dictionary]: https://www.iucr.org/resources/cif/dictionaries/cif_core
-[COMCIFS/cif_core]: https://github.com/COMCIFS/cif_core
-[Crystallography Domain Ontology]: https://github.com/emmo-repo/domain-crystallography
-[EMMO]: https://github.com/emmo-repo/EMMO
-[cif_core.ttl]: ontology/cif-core.ttl
-[dic2owl/README.md]: dic2owl/README.md