Two minor typos (#381)

AUTHORS_README.adoc

@@ -8,7 +8,7 @@ To start writing a new document, follow these steps:
 2) create a directory with the same name of the doc title lowercase
 with underscore for space.
 
-3) copy a master document from other docs to semplify coherency and
+3) copy a master document from other docs to simplify coherency and
 change whatever needs to be changed.
 
 4) follow the convention to call the name of the document with the same
@@ -23,7 +23,7 @@ The first _ character will separate the docname from the chapter names
 and will guarantee automatic inclusion of the chapters into the final
 output formats.
 
-6) when you reach a worth point on your document, create a patch with:
+6) when you reach a worthwhile point on your document, create a patch with:
 
  git add docname
  git commit -m "Added manual docname, first draft"