tests: modify minirst test input to new format

Modifying the test input data shows the effects of the last patches.
In text output nothing has changed.
In html output the title has moved on its own line.

tests/test-minirst.py

@@ -202,6 +202,7 b" debugformats('sections', sections)"
 
 admonitions = """
 .. note::
+
    This is a note
 
    - Bullet 1

tests/test-minirst.py.out

@@ -683,7 +683,10 b' Note:'
 html format:
 ----------------------------------------------------------------------
 <p>
-<b>Note:</b> This is a note
+<b>Note:</b> 
+</p>
+<p>
+This is a note
 </p>
 <ul>
  <li> Bullet 1