Remove and replace references to "trainings" in favor of "documentation"

Author: stevepiercy

docs/contributing/authors.md

@@ -90,7 +90,7 @@ To validate spelling, run the following command.
 make spellcheck
 ```
 
-Open `/_build/spellcheck/` for each training's misspellings.
+Open `/_build/spellcheck/` for misspellings.
 
 Because it is difficult to automate good English grammar and syntax, we do not strictly enforce it.
 We also understand that contributors might not be fluent in English.

docs/contributing/index.md

@@ -79,7 +79,7 @@ Contributors to the Plone Documentation may perform one or many roles.
 
 ## Documentation quality requirements
 
-We use GitHub Actions with every pull request to enforce Training documentation quality.
+We use GitHub Actions with every pull request to enforce Plone Documentation quality.
 We recommend that you build the documentation locally to catch errors and warnings early on.
 See {doc}`setup-build` for instructions for how to set up and build the documentation and to run quality checks.
 

docs/contributing/setup-build.md

@@ -87,7 +87,7 @@ See {ref}`authors-english-label` for configuration.
 make spellcheck
 ```
 
-Open `/_build/spellcheck/` for each training's misspellings.
+Open `/_build/spellcheck/` for misspellings.
 
 
 ### `html_meta`

docs/contributing/writing-docs-guide.md

@@ -6,7 +6,7 @@ html_meta:
 
 # General Guide to Writing Documentation
 
-This guide provides general help for writing documentation for Plone Trainings.
+This guide provides general help for writing documentation for Plone.
 
 
 ## MyST, reStructuredText, and Markdown

docs/glossary.md

@@ -231,10 +231,10 @@ Docutils
 
 reStructuredText
     [reStructuredText (rST)](https://docutils.sourceforge.io/rst.html) is an easy-to-read, what-you-see-is-what-you-get plaintext markup syntax and parser system.
-    The Training documentation was written in reStructuredText originally, then converted to {term}`MyST` in 2021.
+    The Plone 6 Documentation was written in reStructuredText originally, then converted to {term}`MyST` in 2022.
 
 MyST
-    [Markedly Structured Text (MyST)](https://myst-parser.readthedocs.io/en/latest/) is a rich and extensible flavor of Markdown, for authoring training documentation.
+    [Markedly Structured Text (MyST)](https://myst-parser.readthedocs.io/en/latest/) is a rich and extensible flavor of Markdown, for authoring Plone Documentation.
 
 Markdown
     [Markdown](https://daringfireball.net/projects/markdown/) is a text-to-HTML conversion tool for web writers.