adding white background to callingcards_vs_chip; removing README upda…

…te from this branch; minor edits to text

sites/main-site/src/content/blog/2024/callingcards_intro.mdx

@@ -17,7 +17,7 @@ label:
 import { YouTube } from '@astro-community/astro-embed-youtube';
 
 import alf_gif from '@assets/images/blog/callingcards/alf_what_is_this.webp';
-import callingcards_vs_chip from '@assets/images/blog/callingcards/callingcards_vs_chip.png';
+import callingcards_vs_chip from '@assets/images/blog/callingcards/callingcards_vs_chip_white.png';
 import callingcards_metro from '@assets/images/blog/callingcards/callingcards_metromap.png';
 import callingcards_mammals from '@assets/images/blog/callingcards/callingcards_mammals.png';
 
@@ -33,11 +33,11 @@ The [`nf-core/callingcards`][nf-core-callingcards-link] workflow is here!
 
 # What is Calling Cards?
 
-Calling cards is the name of a sequencing or array based assay developed in Rob Mitra’s
+Calling cards is the name of a sequencing based assay developed in Rob Mitra’s
 lab (https://mitralab.wustl.edu/) at Washington University in St Louis to interrogate
 the DNA binding locations of proteins called Transcription Factors. Transcription
 Factors (TF) are a class of proteins capable of binding to DNA to affect the
-transcription of genes, typically those nearest the binding event. In order to record
+transcription of genes. In order to record
 where a given TF binds, calling cards harnesses the power of a retrotransposon, or a
 transcribed genomic sequence capable of copying itself back into the
 genome, to deposit a molecular barcode into the genome when a TF binds.