Fix indentation.

debexpo/plugins/similar.py

@@ -59,13 +59,13 @@ class SimilarPlugin(BasePlugin):
     def test_similar_packages(self):
         binary_packages = self.package_version.get_binary_packages()
 
-	packages = [b.name for b in binary_packages]
-	descriptions = [b.get_description() for b in binary_packages]
+        packages = [b.name for b in binary_packages]
+        descriptions = [b.get_description() for b in binary_packages]
 
-	sd = SemanticData(packages, descriptions)
+        sd = SemanticData(packages, descriptions)
 
-    for p in sd.iter_similar_packages():
-        self._add_result(**p)
+        for p in sd.iter_similar_packages():
+            self._add_result(**p)
 
 
 plugin = SimilarPlugin