DOC: Fix missing periods and non capitalized summary beginnings (pandas-dev#28858)

Author: refactoriel

pandas/_libs/tslibs/period.pyx

@@ -1710,7 +1710,7 @@ cdef class _Period:
     def asfreq(self, freq, how='E'):
         """
         Convert Period to desired frequency, either at the start or end of the
-        interval
+        interval.
 
         Parameters
         ----------
@@ -1777,7 +1777,7 @@ cdef class _Period:
     def to_timestamp(self, freq=None, how='start', tz=None):
         """
         Return the Timestamp representation of the Period at the target
-        frequency at the specified end (how) of the Period
+        frequency at the specified end (how) of the Period.
 
         Parameters
         ----------
@@ -2380,7 +2380,7 @@ cdef class _Period:
 
 class Period(_Period):
     """
-    Represents a period of time
+    Represents a period of time.
 
     Parameters
     ----------

pandas/_libs/tslibs/timedeltas.pyx

@@ -1344,7 +1344,7 @@ class Timedelta(_Timedelta):
 
     def floor(self, freq):
         """
-        return a new Timedelta floored to this resolution.
+        Return a new Timedelta floored to this resolution.
 
         Parameters
         ----------
@@ -1355,7 +1355,7 @@ class Timedelta(_Timedelta):
 
     def ceil(self, freq):
         """
-        return a new Timedelta ceiled to this resolution.
+        Return a new Timedelta ceiled to this resolution.
 
         Parameters
         ----------

pandas/core/arrays/interval.py

@@ -975,7 +975,7 @@ def length(self):
     @property
     def mid(self):
         """
-        Return the midpoint of each Interval in the IntervalArray as an Index
+        Return the midpoint of each Interval in the IntervalArray as an Index.
         """
         try:
             return 0.5 * (self.left + self.right)

pandas/io/formats/style.py

@@ -849,7 +849,7 @@ def set_uuid(self, uuid):
 
     def set_caption(self, caption):
         """
-        Set the caption on a Styler
+        Set the caption on a Styler.
 
         Parameters
         ----------

pandas/plotting/_misc.py

@@ -8,7 +8,7 @@
 
 def table(ax, data, rowLabels=None, colLabels=None, **kwargs):
     """
-    Helper function to convert DataFrame and Series to matplotlib.table
+    Helper function to convert DataFrame and Series to matplotlib.table.
 
     Parameters
     ----------
@@ -32,7 +32,7 @@ def table(ax, data, rowLabels=None, colLabels=None, **kwargs):
 
 def register(explicit=True):
     """
-    Register Pandas Formatters and Converters with matplotlib
+    Register Pandas Formatters and Converters with matplotlib.
 
     This function modifies the global ``matplotlib.units.registry``
     dictionary. Pandas adds custom converters for
@@ -54,7 +54,7 @@ def register(explicit=True):
 
 def deregister():
     """
-    Remove pandas' formatters and converters
+    Remove pandas' formatters and converters.
 
     Removes the custom converters added by :func:`register`. This
     attempts to set the state of the registry back to the state before