Finish quick polish of page

This page belongs to the development directory and does not require
the same level of polish as user documentation. Quick word and style
cleanups for tone and style.

doc/development/database/dbcheck-migrations-job.md

@@ -27,7 +27,7 @@ This job is allowed to fail, because it can throw some false positives.
 For example, when we drop a column and then roll back, this column is always
 re-added at the end of the list of columns. If the column was previously in
 the middle of the list, the rollback can't return the schema back exactly to
-its previous state. The job to fail, but it's an acceptable situation.
+its previous state. The job fails, but it's an acceptable situation.
 
 For a real-life example, refer to
 [this failed job](https://gitlab.com/gitlab-org/gitlab/-/jobs/2006544972#L138).
@@ -35,8 +35,8 @@ Here, the author dropped the `position` column.
 
 ### Schema dump comparison fails after rollback
 
-This often happens if your working branch is behind the target branch. Here is a real life
-scenario:
+This failure often happens if your working branch is behind the target branch.
+A real scenario:
 
 ```mermaid
 graph LR
@@ -50,18 +50,18 @@ graph LR
     classDef error fill:#f15146,stroke:#d4121a
 ```
 
-1. You checkout the `dev` working branch from the `main` target branch. At this point
-each have their `HEAD` at commit A.
-1. Someone works on the `main` branch and drops the `fk_rails_dbebdaa8fe` constraint, thus creating
-   commit B on `main`.
+1. You check out the `dev` working branch from the `main` target branch. At this point,
+   each branch has their `HEAD` at commit A.
+1. Someone works on the `main` branch and drops the `fk_rails_dbebdaa8fe` constraint,
+   thus creating commit B on `main`.
 1. You add column `dependency_proxy_size` to your `dev` branch.
-1. The `db:check-migrations` job fails for your `dev` branch's CI pipeline complaining that
-the `structure.sql` file did not rollback to its expected state.
+1. The `db:check-migrations` job fails for your `dev` branch's CI/CD pipeline, because
+   the `structure.sql` file did not rollback to its expected state.
 
-This happened because `dev` had only commits A and C, not B. Thus, its database schema
-did not know about the removal of the `fk_rails_dbebdaa8fe` constraint. So, when comparing the two
-schemas, the `dev` branch will have this constraint while the `main` branch won't.
+This happened because branch `dev` contained commits A and C, not B. Its database schema
+did not know about the removal of the `fk_rails_dbebdaa8fe` constraint. When comparing the two
+schemas, the `dev` branch contained this constraint while the `main` branch didn't.
 
-This example really happened. See the [job failure logs](https://gitlab.com/gitlab-org/gitlab/-/jobs/1992050890).
+This example really happened. Read the [job failure logs](https://gitlab.com/gitlab-org/gitlab/-/jobs/1992050890).
 
 To fix these kind of issues, rebase the working branch onto the target branch to get the latest changes.