Fix typo: bellow -> below

sonar-core/src/main/resources/org/sonar/l10n/core.properties

@@ -2683,7 +2683,7 @@ onboarding.project.header.description=Want to quickly analyze a first project? F
 
 onboarding.project_analysis.header=Analyze your project
 onboarding.project_analysis.description=We initialized your project on SonarCloud, now it's up to you to launch analyses!
-onboarding.project_analysis.commands_for_analysis=Bellow are the commands to use to do an analysis.
+onboarding.project_analysis.commands_for_analysis=Below are the commands to use to do an analysis.
 onboarding.project_analysis.guide_to_integrate_piplines=follow the guide to integrating with Pipelines
 onboarding.project_analysis.guide_to_integrate_travis=follow the guide to integrating with Travis CI
 onboarding.project_analysis.guide_to_integrate_vsts=follow the guide to integrating with VSTS