Fix doctests and newline in printing

Author: oscarbenjamin

doc/source/general.rst

@@ -46,6 +46,7 @@ The user can mutate the properties directly, for example::
     >>> fmpq(3,2)
     fmpq(3,2)
     >>> ctx.pretty = True
+    >>> fmpq(3,2)
     3/2
 
 Calling ``ctx.default()`` restores the default settings.

src/flint/flint_base/flint_context.pyx

@@ -63,7 +63,7 @@ cdef class FlintContext:
                "prec = %-8s    # real/complex precision (in bits)\n"   \
                "dps = %-8s     # real/complex precision (in digits)\n"    \
                "cap = %-8s     # power series precision\n"    \
-               "threads = %-8s # max number of threads used internally\n" % \
+               "threads = %-8s # max number of threads used internally" % \
             (self.pretty, self.unicode, self.prec, self.dps, self.cap, self.threads)
 
     def cleanup(self):

src/flint/test/test.py

@@ -30,7 +30,7 @@ def raises(f, exception):
 prec = 53          # real/complex precision (in bits)
 dps = 15           # real/complex precision (in digits)
 cap = 10           # power series precision
-threads = 1        # max number of threads used internally
+threads = 1        # max number of threads used internally\
 """
 
 def test_pyflint():