bpo-39136: Fixed typos (GH-17720)

funtion -> function; configuraton -> configuration; defintitions -> definitions;
focusses -> focuses; necesarily -> necessarily; follwing -> following;
Excape -> Escape,
diff --git a/Lib/tkinter/tix.py b/Lib/tkinter/tix.py
index d9c097a..ac54550 100644
--- a/Lib/tkinter/tix.py
+++ b/Lib/tkinter/tix.py
@@ -1890,7 +1890,7 @@
         containing the current size setting of the given column.  When
         option-value pairs are given, the corresponding options of the
         size setting of the given column are changed. Options may be one
-        of the follwing:
+        of the following:
               pad0 pixels
                      Specifies the paddings to the left of a column.
               pad1 pixels
@@ -1915,7 +1915,7 @@
         When no option-value pair is given, this command returns a list con-
         taining the current size setting of the given row . When option-value
         pairs are given, the corresponding options of the size setting of the
-        given row are changed. Options may be one of the follwing:
+        given row are changed. Options may be one of the following:
               pad0 pixels
                      Specifies the paddings to the top of a row.
               pad1 pixels