Replaced "the the" with "the" (pandas-dev#31500)

Author: ShaharNaveh

pandas/_libs/groupby.pyx

@@ -1143,7 +1143,7 @@ def group_rank(float64_t[:, :] out,
             # Update out only when there is a transition of values or labels.
             # When a new value or group is encountered, go back #dups steps(
             # the number of occurrence of current value) and assign the ranks
-            # based on the the starting index of the current group (grp_start)
+            # based on the starting index of the current group (grp_start)
             # and the current index
             if (i == N - 1 or
                     (masked_vals[_as[i]] != masked_vals[_as[i+1]]) or

pandas/core/arrays/interval.py

@@ -729,11 +729,11 @@ def _shallow_copy(self, left=None, right=None, closed=None):
         Parameters
         ----------
         left : array-like
-            Values to be used for the left-side of the the intervals.
+            Values to be used for the left-side of the intervals.
             If None, the existing left and right values will be used.
 
         right : array-like
-            Values to be used for the right-side of the the intervals.
+            Values to be used for the right-side of the intervals.
             If None and left is IntervalArray-like, the left and right
             of the IntervalArray-like will be used.
 

pandas/core/generic.py

@@ -2681,7 +2681,7 @@ def to_clipboard(
         ... # 0,1,2,3
         ... # 1,4,5,6
 
-        We can omit the the index by passing the keyword `index` and setting
+        We can omit the index by passing the keyword `index` and setting
         it to false.
 
         >>> df.to_clipboard(sep=',', index=False)

pandas/plotting/_core.py

@@ -1426,7 +1426,7 @@ def pie(self, **kwargs):
         Examples
         --------
         In the example below we have a DataFrame with the information about
-        planet's mass and radius. We pass the the 'mass' column to the
+        planet's mass and radius. We pass the 'mass' column to the
         pie function to get a pie plot.
 
         .. plot::