In the example showing the irrelevance of start columns, restore that the

start columns differ (editing had pushed them all into column 0).

Doc/lib/libdoctest.tex

@@ -304,10 +304,10 @@ yes
 The starting column doesn't matter:
 
 \begin{verbatim}
->>> assert "Easy!"
->>> import math
->>> math.floor(1.9)
-1.0
+  >>> assert "Easy!"
+        >>> import math
+            >>> math.floor(1.9)
+            1.0
 \end{verbatim}
 
 and as many leading whitespace characters are stripped from the expected