Reformat adjacent annotations as '# indirect doctest, optional...'

Author: Matthias Koeppe

src/sage/matroids/linear_matroid.pyx

@@ -5042,7 +5042,7 @@ cdef class QuaternaryMatroid(LinearMatroid):
         EXAMPLES::
 
             sage: from sage.matroids.advanced import *
-            sage: QuaternaryMatroid(matrix=Matrix(GF(4, 'x'),       # indirect doctest  # optional - sage.rings.finite_rings
+            sage: QuaternaryMatroid(matrix=Matrix(GF(4, 'x'),         # indirect doctest, optional - sage.rings.finite_rings
             ....:                                 [[1, 0, 1, 1, 1],
             ....:                                  [0, 1, 1, 1, 1]]))
             Quaternary matroid of rank 2 on 5 elements

src/sage/matroids/minor_matroid.py

@@ -132,7 +132,7 @@ def __init__(self, matroid, contractions=None, deletions=None):
         EXAMPLES::
 
             sage: from sage.matroids.advanced import *
-            sage: M = MinorMatroid(matroids.named_matroids.Fano(),  # indirect doctest  # optional - sage.rings.finite_rings
+            sage: M = MinorMatroid(matroids.named_matroids.Fano(),    # indirect doctest, optional - sage.rings.finite_rings
             ....:                  contractions=set(), deletions=set(['g']))
             sage: M.is_isomorphic(matroids.Wheel(3))                                    # optional - sage.rings.finite_rings
             True