Update profiles-yml-context.md (#4110)

[Preview](https://docs-getdbt-com-git-dbeatty-context-profiles-dbt-labs.vercel.app/reference/dbt-jinja-functions/profiles-yml-context)

## What are you changing in this pull request and why?

Since this page doesn't refer to any context variables, this PR
separates replaces all instances of "variable" with "method".

## Checklist
- [x] Review the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
and [About
versioning](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
so my content adheres to these guidelines.

website/docs/reference/dbt-jinja-functions/profiles-yml-context.md

@@ -1,16 +1,16 @@
 ---
-title: "About profiles.yml context variable"
+title: "About profiles.yml context"
 sidebar_label: "profiles.yml context"
 id: "profiles-yml-context"
-description: "Use these context variables to configure resources in `profiles.yml` file."
+description: "Use these context methods to configure resources in `profiles.yml` file."
 ---
 
-The following context variables and methods are available when configuring
+The following context methods are available when configuring
 resources in the `profiles.yml` file.
 
-**Available context variables:**
+**Available context methods:**
 - [env_var](/reference/dbt-jinja-functions/env_var)
-- [vars](/reference/dbt-jinja-functions/var) (_Note: only variables defined with `--vars` are available_)
+- [var](/reference/dbt-jinja-functions/var) (_Note: only variables defined with `--vars` are available_)
 
 ### Example usage