Issue #25179: Preparatory cleanup of existing docs on string formatting

* Various sections were pointing to the section on the string.Formatter
  class, when the section on the common format string syntax is probably more
  appropriate
* Fix references to various format() functions and methods
* Nested replacement fields may contain conversions and format specifiers,
  and this is tested; see Issue #19729 for instance

1 files changed, 2 insertions, 3 deletions

diff --git a/Doc/tutorial/introduction.rst b/Doc/tutorial/introduction.rst
index c5c1343..8758f38 100644
--- a/Doc/tutorial/introduction.rst
+++ b/Doc/tutorial/introduction.rst
@@ -352,9 +352,8 @@ The built-in function :func:`len` returns the length of a string::
       Strings support a large number of methods for
       basic transformations and searching.
 
-   :ref:`string-formatting`
-      Information about string formatting with :meth:`str.format` is described
-      here.
+   :ref:`formatstrings`
+      Information about string formatting with :meth:`str.format`.
 
    :ref:`old-string-formatting`
       The old formatting operations invoked when strings and Unicode strings are