added om3 coupler link and fixed list format, text

docs/models/model_components/coupler.md

@@ -4,11 +4,12 @@
 
 <img src = "../../../assets/component-logos/component-maps/coupler-component-map.png" class="white-img-bg"></img>
 
-A coupler is a software that allows synchronised exchanges of coupling information between numerical codes representing different components of the climate system.
+A coupler is a software package that allows synchronised exchanges of coupling information between numerical codes representing different components of the climate system.
 
 ## <div class="center-icons"> [OASIS3-MCT][OASIS3-MCT] {{ supported }} </div>
 
 [OASIS3-MCT][OASIS3-MCT] is the version of the Ocean Atmosphere Sea Ice Soil (OASIS) coupler interfaced with the Model Coupling Toolkit (MCT) from the Argonne National Laboratory. OASIS3-MCT is the coupler used in the configurations:
+
 - ACCESS-ESM1.5
 - ACCESS-CM2 
 - ACCESS-OM2
@@ -18,7 +19,8 @@ A coupler is a software that allows synchronised exchanges of coupling informati
 
 [NUOPC][NUOPC-int-layer] (National Unified Operational Prediction Capability) Interoperability Layer defines conventions and a set of generic components for building coupled models using the Earth System Modeling Framework (ESMF).
 
-ACCESS-OM3, a configuration currently under development, uses NUOPC to couple its MOM6 and CICE6 model components as there are no respective OASIS coupling interfaces for these components.
+ACCESS-OM3, a configuration currently under development, uses [NUOPC to couple its MOM6 and CICE6 model components][coupler-choice] as there are no respective OASIS coupling interfaces for these components.
 
 [OASIS3-MCT]: https://oasis.cerfacs.fr/en/
-[NUOPC-int-layer]: https://earthsystemmodeling.org/nuopc/
+[NUOPC-int-layer]: https://earthsystemmodeling.org/nuopc/
+[coupler-choice]: https://github.com/COSIMA/access-om3/discussions/7