Adapt devdocs

docs/code-howtos/fetchers.md

@@ -76,10 +76,10 @@ In `build.gradle`, these variables are filled:
 "springerNatureAPIKey" : System.getenv('SpringerNatureAPIKey')
 ```
 
-The `BuildInfo` class reads from that file.
+The `BuildInfo` class reads from that file and the key needs to be put into the map of default api keys in `JabRefCliPreferences::getDefaultFetcherKeys`
 
 ```java
-Injector.instantiateModelOrService(BuildInfo.class).springerNatureAPIKey
+keys.put(SpringerFetcher.FETCHER_NAME, buildInfo.springerNatureAPIKey);
 ```
 
 When executing `./gradlew run`, gradle executes `processResources` and populates `build/build.properties` accordingly. However, when working directly in the IDE, Eclipse keeps reading `build.properties` from `src/main/resources`. In IntelliJ, the task `JabRef Main` is executing `./gradlew processResources` before running JabRef from the IDE to ensure the `build.properties` is properly populated.