license: clarify descriptions (#1036)

Following discussion in #711

pages/common/license.md

@@ -2,18 +2,18 @@
 
 > Create license files for open-source projects.
 
-- Create a license:
+- Print a license to stdout, using the defaults (auto-detected author name, and current year):
 
 `license {{license_name}}`
 
-- Create a license with custom filename:
+- Generate a license and save it to a file:
 
 `license -o {{filename}} {{license_name}}`
 
-- List all locally available licenses:
+- List all available licenses:
 
 `license ls`
 
-- Create a license with explicitly-set name and year:
+- Generate a license with custom author name and year:
 
 `license --name {{author}} --year {{release_year}} {{license_name}}`