Update README.md

Author: ahmedkhemiri95

README.md

@@ -12,7 +12,7 @@ PDFs is good source of data, most of the organization release their data in PDFs
 
 Most of the Text Analytics Library or frameworks are designed in Python only, this gives a leverage on text analytics. You can never process a pdf directly in exising frameworks of Machine Learning or Natural Language Processing. Unless they are proving explicit interface for this, **we have to convert pdf to text first.**
 ## Problematic
-Most Python Liabiries for Pdf Processing such as PyPDF2 and Pdfminer.six perform in text extraction task, but this performance is limited to a small PDF document.
+Most Python Liabiries for Pdf Processing such as PyPDF2 and Pdfminer.six perform in text extraction task, but this performance is limited to a small and simple PDF document.
 
 That's why, **PDFs-TextExtract** project developed to **extract text from multiple and large pdf documents.**