Fix documentation for new float_precision on read_csv (#36358)

Author: Dr-Irv

pandas/io/parsers.py

@@ -338,9 +338,12 @@
     option can improve performance because there is no longer any I/O overhead.
 float_precision : str, optional
     Specifies which converter the C engine should use for floating-point
-    values. The options are `None` or `high` for the ordinary converter,
-    `legacy` for the original lower precision pandas converter, and
-    `round_trip` for the round-trip converter.
+    values. The options are ``None`` or 'high' for the ordinary converter,
+    'legacy' for the original lower precision pandas converter, and
+    'round_trip' for the round-trip converter.
+
+    .. versionchanged:: 1.2
+
 storage_options : dict, optional
     Extra options that make sense for a particular storage connection, e.g.
     host, port, username, password, etc., if using a URL that will
@@ -349,7 +352,7 @@
     a file-like buffer. See the fsspec and backend storage implementation
     docs for the set of allowed keys and values.
 
-    .. versionadded:: 1.2.0
+    .. versionadded:: 1.2
 
 Returns
 -------
@@ -2290,9 +2293,10 @@ def TextParser(*args, **kwds):
         can be inferred, there often will be a large parsing speed-up.
     float_precision : str, optional
         Specifies which converter the C engine should use for floating-point
-        values. The options are None for the ordinary converter,
-        'high' for the high-precision converter, and 'round_trip' for the
-        round-trip converter.
+        values. The options are `None` or `high` for the ordinary converter,
+        `legacy` for the original lower precision pandas converter, and
+        `round_trip` for the round-trip converter.
+
         .. versionchanged:: 1.2
     """
     kwds["engine"] = "python"