[3.14] pythongh-140065: Lexical analysis: Correct note about leading zeros in floating point numbers (pythonGH-140066) (pythonGH-140167)

(cherry picked from commit 1624c64)

Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>

Author: miss-islington

Doc/reference/lexical_analysis.rst

@@ -1308,8 +1308,8 @@ The parts are separated by a decimal point, ``.``::
    2.71828
    4.0
 
-Unlike in integer literals, leading zeros are allowed in the numeric parts.
-For example, ``077.010`` is legal, and denotes the same number as ``77.10``.
+Unlike in integer literals, leading zeros are allowed.
+For example, ``077.010`` is legal, and denotes the same number as ``77.01``.
 
 As in integer literals, single underscores may occur between digits to help
 readability::