Adjust auth and rabbit docs

Author: bcb

docs/authentication.md

@@ -31,7 +31,7 @@ RUN make && make install
 WORKDIR /var/lib/postgresql
 ```
 
-Then rebuild the Postgres imageand recreate the container:
+Then rebuild the Postgres image and recreate the container:
 
 ```sh
 docker compose build postgres

docs/rabbitmq.md

@@ -25,7 +25,7 @@ RUN make && make install
 WORKDIR /var/lib/postgresql
 ```
 
-Then rebuild the Postgres imageand recreate the container:
+Then rebuild the Postgres image and recreate the container:
 
 ```sh
 docker compose build postgres
@@ -36,12 +36,6 @@ docker compose up -d postgres
 > [here](https://github.com/omniti-labs/pg_amqp/issues/41), and [fixed but not
 > yet merged](https://github.com/omniti-labs/pg_amqp/pull/43).
 
-Then rebuild:
-
-```sh
-docker compose build postgres
-```
-
 ## ➡️ 2. Add Migrations
 
 ### 📚 Load Required Extensions