Update README.md

README.md

@@ -118,7 +118,7 @@ Guidelines also contains a range of technical and conversational vocabulary with
 PDF documents were converted to text using [GROBID](https://github.com/kermitt2/grobid). 
 After extracting the raw text from each source, we cleaned data with an ad-hoc process to exclude irrelevant or repetitive content that did not contribute to the textual content, such as URLs, references, figures, table delimiters, and ill-formatted characters. 
 This filtering procedure was performed differently for each source using a sample of 50 articles. Please note that this procedure is not perfect, as it may have removed useful information or kept superfluous content. We provide the `raw_text` for each article if you would like to perform your own cleaning step. 
-Additionally, the text was standardized to a unified format with hierarchical section headers indicated by `#`, homogenous spacing `\n\n` separating paragraphs, and normalized lists formatted with `- ` bullet points. 
+Additionally, the text was standardized to a unified format with hierarchical section headers indicated by `'#'`, homogenous spacing `'\n\n'` separating paragraphs, and normalized lists formatted with `'- '` bullet points. 
 Finally, all samples were deduplicated using title matching, and articles that were too short or not English were filtered out. 
 
 #### Who are the source data producers?