DOC: Fix dangling hyphens. (pandas-dev#51889)

Author: JulienPalard

doc/source/ecosystem.rst

@@ -377,8 +377,8 @@ aggregations for step functions defined over real numbers, datetime and timedelt
 
 xarray brings the labeled data power of pandas to the physical sciences by
 providing N-dimensional variants of the core pandas data structures. It aims to
-provide a pandas-like and pandas-compatible toolkit for analytics on multi-
-dimensional arrays, rather than the tabular data for which pandas excels.
+provide a pandas-like and pandas-compatible toolkit for analytics on
+multi-dimensional arrays, rather than the tabular data for which pandas excels.
 
 
 .. _ecosystem.io:

doc/source/user_guide/integer_na.rst

@@ -58,8 +58,8 @@ with the dtype.
 .. warning::
 
    Currently :meth:`pandas.array` and :meth:`pandas.Series` use different
-   rules for dtype inference. :meth:`pandas.array` will infer a nullable-
-   integer dtype
+   rules for dtype inference. :meth:`pandas.array` will infer a
+   nullable-integer dtype
 
    .. ipython:: python