Fix multiline comment in sample file to be actual multiline comment (#180)

Author: kouralex

conf/datasources.ini.sample

@@ -67,11 +67,11 @@
 ;                         merge_all            Merge all component parts to their host records
 ;                         merge_non_articles   Merge to host record unless article (including e-journal articles)
 ;                         merge_non_earticles  Merge to host record unless e-journal article
-; mergeMultiLevelParts  If set to true, component parts are merged to their parents 
-                        regardless of whether the parents are host records or component 
-                        parts. This allows a multi-level record hierarchy. 
-                        If false (default), component parts are only merged to host 
-                        records.
+; mergeMultiLevelParts  If set to true, component parts are merged to their parents
+;                       regardless of whether the parents are host records or component
+;                       parts. This allows a multi-level record hierarchy.
+;                       If false (default), component parts are only merged to host
+;                       records.
 ; idPrefix              Prefix to be used with the record ID's. Prefixes are always added so that ID's are unique, e.g. ID 1234 becomes prefix.1234 (optional, section name is used if not provided).
 ; solrIdPrefix          Prefix to be used with the record ID's in Solr (optional, overrides idPrefix but does not modify the prefix used in the Database).
 ; indexMergedParts      Whether to index merged component parts also separately with hidden_component_boolean field set to true. Defaults to true.