Update README.md (#254)

Remove duplication of links to readthedocs site. Fix small spelling and or typos

README.md

@@ -1,15 +1,13 @@
 # PET2BIDS is a code library to convert source Brain PET data to BIDS 
 
-## (more doc @https://pet2bids.readthedocs.io/en/latest/index.html)
-
 [![python](https://github.com/openneuropet/PET2BIDS/actions/workflows/python.yaml/badge.svg)](https://github.com/openneuropet/PET2BIDS/actions/workflows/python.yaml)
 [![Matlab PET2BIDS Tests](https://github.com/openneuropet/PET2BIDS/actions/workflows/matlab.yaml/badge.svg)](https://github.com/openneuropet/PET2BIDS/actions/workflows/matlab.yaml) 
 [![Documentation Status](https://readthedocs.org/projects/pet2bids/badge/?version=latest)](https://pet2bids.readthedocs.io/en/latest/?badge=latest)
 [![phantoms](https://github.com/openneuropet/PET2BIDS/actions/workflows/phantoms.yaml/badge.svg?event=push)](https://github.com/openneuropet/PET2BIDS/actions/workflows/phantoms.yaml)
 
-This repository is hosting tools to curate PET brain data using the [Brain Imaging Data Structure Specification](https://bids-specification.readthedocs.io/en/stable/04-modality-specific-files/09-positron-emission-tomography.html). The work to create these tools is funded by [Novo Nordisk fonden](https://novonordiskfonden.dk/en/) (NNF20OC0063277) and the [BRAIN initiative](https://braininitiative.nih.gov/) (MH002977-01).
+This repository is hosting tools to curate PET brain data using the [Brain Imaging Data Structure Specification](https://bids-specification.readthedocs.io/en/stable/04-modality-specific-files/09-positron-emission-tomography.html). The work to create these tools is funded by [Novo Nordisk Foundation](https://novonordiskfonden.dk/en/) (NNF20OC0063277) and the [BRAIN initiative](https://braininitiative.nih.gov/) (MH002977-01).
 
-For DICOM conversion, we rely on [dcm2niix](https://www.nitrc.org/plugins/mwiki/index.php/dcm2nii:MainPage), 
+For DICOM image conversion, we rely on [dcm2niix](https://www.nitrc.org/plugins/mwiki/index.php/dcm2nii:MainPage), 
 collaborating with Prof. Chris Rorden without whom we could not convert your data! For more information on dcm2niix 
 and nifti please see [The first step for neuroimaging data analysis: DICOM to NIfTI conversion](https://www.ncbi.nlm.nih.gov/pubmed/26945974) paper.