DOC: Update docs.ecosystem.api.pandasdmx (#16172)

* Update docs.ecosystem.api.pandasdmx

* Remove links to data providers

* Removed references to data providers

Author: dr-leo

doc/source/ecosystem.rst

@@ -173,13 +173,15 @@ This package requires valid credentials for this API (non free).
 
 `pandaSDMX <https://pandasdmx.readthedocs.io>`__
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-pandaSDMX is an extensible library to retrieve and acquire statistical data
+pandaSDMX is a library to retrieve and acquire statistical data
 and metadata disseminated in
-`SDMX <http://www.sdmx.org>`_ 2.1. This standard is currently supported by
-the European statistics office (Eurostat)
-and the European Central Bank (ECB). Datasets may be returned as pandas Series
-or multi-indexed DataFrames.
-
+`SDMX <http://www.sdmx.org>`_ 2.1, an ISO-standard
+widely used by institutions such as statistics offices, central banks,   
+and international organisations. pandaSDMX can expose datasets and related 
+structural metadata including dataflows, code-lists, 
+and datastructure definitions as pandas Series 
+or multi-indexed DataFrames.  
+   
 `fredapi <https://github.com/mortada/fredapi>`__
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 fredapi is a Python interface to the `Federal Reserve Economic Data (FRED) <http://research.stlouisfed.org/fred2/>`__