Fix version for Galaxy

Sem-Ver: bugfix
Change-Id: I53aea30cc677e2a391f3ae461f830c338ba6b347
diff --git a/tools/generate-galaxy-yml.py b/tools/generate-galaxy-yml.py
index 17f787e..e3e6c29 100644
--- a/tools/generate-galaxy-yml.py
+++ b/tools/generate-galaxy-yml.py
@@ -4,7 +4,7 @@
 GALAXY_YML = {
     'namespace': 'vexxhost',
     'name': 'atmosphere',
-    'version': VersionInfo('ansible-collection-atmosphere').release_string(),
+    'version': VersionInfo('ansible-collection-atmosphere').release_string().replace('.dev', '-'),
     'readme': 'README.md',
     'authors': [
         "Mohammed Naser <mnaser@vexxhost.com>",