Fix markup documentation

CONFIGURATION.md

 ### Configuration
 
-Configuration may be set using SpringBoot's configuration file (application.properties).
+Configuration may be set using SpringBoot's configuration file (`application.properties`) and environment variables.
 
-Environment variables
+##### Environment variables
 
 | Variable                   | Default                                     | Description                                           |
 |----------------------------|---------------------------------------------|-------------------------------------------------------|

README.md

@@ -73,7 +73,7 @@ See
     * Integration tests and code coverage for unit and integration tests are disabled by default and can be enabled separately and together.
     * Code coverage for unit tests is enabled by `-Djacoco.skip=false`. Result is available in `target/site/jacoco` folder and includes code coverage execution data and reports.
 
-#### Recommentation
+### Recommendation
 
 * Have local docker-compose files - `.gitignore` contains `docker-compose-local*`
     * for application and database together that may contain local configuration