Fix doctests (#4439)

Author: dcherian

xarray/core/combine.py

@@ -711,8 +711,8 @@ def combine_by_coords(
     <xarray.Dataset>
     Dimensions:        (x: 3, y: 4)
     Coordinates:
-      * x              (x) int64 10 20 30
       * y              (y) int64 0 1 2 3
+      * x              (x) int64 10 20 30
     Data variables:
         temperature    (y, x) float64 10.98 14.3 12.06 10.9 ... 1.743 0.4044 16.65
         precipitation  (y, x) float64 0.4376 0.8918 0.9637 ... 0.7992 0.4615 0.7805

xarray/core/groupby.py

@@ -607,8 +607,8 @@ def quantile(
         array([[0.7, 4.2, 0.7, 1.5],
                [6.5, 7.3, 2.6, 1.9]])
         Coordinates:
-            quantile  float64 0.0
           * y         (y) int64 1 1 2 2
+            quantile  float64 0.0
           * x         (x) int64 0 1
         >>> ds.groupby("y").quantile(0, dim=...)
         <xarray.Dataset>
@@ -630,8 +630,8 @@ def quantile(
                 [2.6 , 2.6 , 2.6 ],
                 [1.9 , 1.9 , 1.9 ]]])
         Coordinates:
-          * quantile  (quantile) float64 0.0 0.5 1.0
           * y         (y) int64 1 1 2 2
+          * quantile  (quantile) float64 0.0 0.5 1.0
           * x         (x) int64 0 1
         >>> ds.groupby("y").quantile([0, 0.5, 1], dim=...)
         <xarray.Dataset>