docs: remove cost, document missing options and improve docs (#653)

source/plugins/base/README.md

@@ -34,7 +34,9 @@ These are all enabled by default, but you can explicitely opt out from them.
     # ... other options
     base: header, repositories                     # Only display "header" and "repositories" sections
     repositories: 100                              # Query only last 100 repositories
+    repositories_batch: 25                         # Query repositories 25 by 25 (lower this to avoid API timeouts)
     repositories_forks: no                         # Don't include forks
     repositories_affiliations: owner, collaborator # Display only repositories where user is owner or collaborator
     repositories_skipped: lowlighter/lowlighter    # Exclude automatically "lowlighter/lowlighter" repository from plugins allowing a skip list
+    commits_authoring: octocat@github.com          # Handle you use when authoring commits, which can be used to filter commits in other plugins
 ```

source/plugins/base/metadata.yml

@@ -1,5 +1,4 @@
 name: "🗃️ Base content"
-cost: 2 GraphQL requests + 1 GraphQL request per 100 repositories fetched
 category: core
 supports:
   - user
@@ -64,7 +63,7 @@ inputs:
     type: array
     format: comma-separated
     default: ""
-    example: my-repo-1, my-repo-2, owner/repo-3 ...
+    example: my-repo-1, my-repo-2, owner/repo-3, ...
 
   # List of surnames or email addresses you use when authoring commits
   # These are mostly used to perform commits analysis to detect ownership