Update README.md

fix double Gg, add periods

Author: rtaycher

README.md

@@ -19,9 +19,9 @@ version 3 first with one of many available converters._
 
 The Python clients generated by openapi-generator comes some downsides. This tool aims to improve on it by:
 
-1. Ggenerating clients which use all the latest and greatest Python features like type annotations and dataclasses
-2. Having better documentation and more obvious usage instructions
-3. Being easier to imrpove and extend, since it's written in python and jinja2 templates while openapi-generator is a large Java probject which uses Mustache templates.
+1. Generating clients which use all the latest and greatest Python features like type annotations and dataclasses.
+2. Having better documentation and more obvious usage instructions.
+3. Being easier to imrpove and extend. Since it's written in python and jinja2 templates while openapi-generator is a larger Java probject which uses mustache templates.
 
 Additionally, because this generator is written in Python, it should be more accessible to contribution by the people
 using it (Python developers).