purge: fix formatting of lists with proper reST markup

hgext/purge.py

@@ -36,13 +36,16 b' def purge(ui, repo, *dirs, **opts):'
     uncommitted changes in an otherwise-clean source tree.
 
     This means that purge will delete:
-     - Unknown files: files marked with "?" by "hg status"
-     - Empty directories: in fact Mercurial ignores directories unless they
-       contain files under source control management
+
+    - Unknown files: files marked with "?" by "hg status"
+    - Empty directories: in fact Mercurial ignores directories unless they
+      contain files under source control management
+
     But it will leave untouched:
-     - Modified and unmodified tracked files
-     - Ignored files (unless --all is specified)
-     - New files added to the repository (with "hg add")
+
+    - Modified and unmodified tracked files
+    - Ignored files (unless --all is specified)
+    - New files added to the repository (with "hg add")
 
     If directories are given on the command line, only files in these
     directories are considered.