Update README.md

Author: Amrutha Elamparuthy

README.md

@@ -10,7 +10,7 @@ The following key changes have been  made to the latest version of the Global Ch
 | Resource                               | Application                                                                                                                                                                                                                                                        |
 |----------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | [ROR](https://ror.org/)               | Provides unique and usable identifiers for GCIS Organizations. Organizations are now mapped to external  [ROR](https://ror.org/) identifiers through the [Lexicon](https://github.com/USGCRP/gcis-conventions/blob/v2.0.0/gcis_resources/lexicon.md) data model. |
-| [Crossref](https://www.crossref.org/) | Displays publications that cite a USGCRP report on the report’s index page. Currently used for NCA4 only.                                                                                                                                                          |
+| [Crossref](https://www.crossref.org/) | Displays publications that cite a USGCRP report on the report’s index page.                                                                                                                                                           |
 
 - The GCIS now reflects several minor changes to resource field names, including an overhaul of the Indicator resource type: previously treated as a Report subset, it is now rightly regarded as a [Figure](https://github.com/USGCRP/gcis-conventions/blob/v2.0.0/gcis_resources/figure.md) type.