docs: add Acknowledgments to Python online docs

Re: #1207

packages/dicom/python/itkwasm-dicom/docs/acknowledgments.md

@@ -0,0 +1,19 @@
+# Acknowledgments
+
+`itkwasm-dicom` stands on the shoulders of the following giants:
+
+- [ITK](https://docs.itk.org/)
+- [GDCM](https://sourceforge.net/projects/gdcm/)
+- [DCMTK](https://dicom.offis.de/dcmtk.php.en)
+- [DCMQI](https://github.com/QIICR/dcmqi)
+
+The versions of libraries are the following:
+
+- [ITK](https://github.com/InsightSoftwareConsortium/ITK-Wasm/blob/main/itk_wasm_env.bash#L18-L19)
+- [GDCM (vendored in
+  ITK)](https://github.com/InsightSoftwareConsortium/ITK-Wasm/blob/main/itk_wasm_env.bash#L18-L19)
+- [DCMTK](https://github.com/InsightSoftwareConsortium/ITK-Wasm/blob/main/itk_wasm_env.bash#L15-L16)
+- [DCMQI](https://github.com/InsightSoftwareConsortium/ITK-Wasm/blob/main/packages/dicom/dcmtk/CMakeLists.txt#L16-L17)
+
+Development of this library was supported by [NCI Imaging Data Commons](https://imaging.datacommons.cancer.gov/), and has been funded in whole or in part with Federal funds from the National Cancer Institute, National Institutes of Health, under Task Order No. HHSN26110071 under Contract No. HHSN261201500003l.
+

packages/dicom/python/itkwasm-dicom/docs/index.md

@@ -32,4 +32,12 @@ await micropip.install('itkwasm-dicom')
 
 apidocs/index.rst
 itkwasm docs <https://itkwasm.readthedocs.io/>
-```
+```
+
+```{toctree}
+:hidden:
+:maxdepth: 3
+:caption: 🙏 Acknowledgements
+
+acknowledgments
+```