Remove unwanted spaces

doc/development/changelog.md

@@ -31,7 +31,7 @@ the `author` field. GitLab team members **should not**.
 
 - Any change that introduces a database migration, whether it's regular, post,
   or data migration, **must** have a changelog entry, even if it is behind a
-  disabled feature flag. Since the migration is executed on [GitLab FOSS](https://gitlab.com/gitlab-org/gitlab-foss/), 
+  disabled feature flag. Since the migration is executed on [GitLab FOSS](https://gitlab.com/gitlab-org/gitlab-foss/),
   the changelog for database schema changes should be written to the
   `changelogs/unreleased/` directory, even when other elements of that change affect only GitLab EE.
 

doc/development/product_analytics/usage_ping.md

@@ -226,7 +226,7 @@ sum(JiraImportState.finished, :imported_issues_count)
 ### Grouping & Batch Operations
 
 The `count`, `distinct_count`, and `sum` batch counters can accept an `ActiveRecord::Relation`
-object, which groups by a specified column. With a grouped relation, the methods do batch counting, 
+object, which groups by a specified column. With a grouped relation, the methods do batch counting,
 handle errors, and returns a hash table of key-value pairs.
 
 Examples:
@@ -912,7 +912,7 @@ The following is example content of the Usage Ping payload.
 
 ## Exporting Usage Ping SQL queries and definitions
 
-Two Rake tasks exist to export Usage Ping definitions. 
+Two Rake tasks exist to export Usage Ping definitions.
 
 - The Rake tasks export the raw SQL queries for `count`, `distinct_count`, `sum`.
 - The Rake tasks export the Redis counter class or the line of the Redis block for `redis_usage_data`.

doc/development/testing_guide/end_to_end/environment_selection.md

 # Environment selection
 
-Some tests are designed to be run against specific environments or [pipelines](https://about.gitlab.com/handbook/engineering/quality/guidelines/debugging-qa-test-failures/#scheduled-qa-test-pipelines). 
+Some tests are designed to be run against specific environments or [pipelines](https://about.gitlab.com/handbook/engineering/quality/guidelines/debugging-qa-test-failures/#scheduled-qa-test-pipelines).
 We can specify what environments or pipelines to run tests against using the `only` metadata.
 
 ## Available switches

doc/user/project/issue_board.md

@@ -232,7 +232,7 @@ This allows you to create unique boards according to your team's need.
 ![Create scoped board](img/issue_board_creation.png)
 
 You can define the scope of your board when creating it or by clicking the "Edit board" button.
-Once a milestone, assignee or weight is assigned to an issue board, you can no longer 
+Once a milestone, assignee or weight is assigned to an issue board, you can no longer
 filter through these in the search bar. In order to do that, you need to remove the desired scope
 (for example, milestone, assignee, or weight) from the issue board.