[3.13] Fix idlelib typos (GH-125484) (#125487)

Fix idlelib typos (GH-125484)

Propagate fixes in Doc/library/idle.rst to help.html.
Change 'interruptable' to 'interruptible' in run.py.
The latter was reported by ember91 in PR 125473.
(cherry picked from commit 3fea1d000e)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

Lib/idlelib/run.py

@@ -108,11 +108,11 @@ else:
 
 # Thread shared globals: Establish a queue between a subthread (which handles
 # the socket) and the main thread (which runs user code), plus global
-# completion, exit and interruptable (the main thread) flags:
+# completion, exit and interruptible (the main thread) flags:
 
 exit_now = False
 quitting = False
-interruptable = False
+interruptible = False
 
 def main(del_exitfunc=False):
     """Start the Python execution server in a subprocess
@@ -582,14 +582,14 @@ class Executive:
             self.locals = {}
 
     def runcode(self, code):
-        global interruptable
+        global interruptible
         try:
             self.user_exc_info = None
-            interruptable = True
+            interruptible = True
             try:
                 exec(code, self.locals)
             finally:
-                interruptable = False
+                interruptible = False
         except SystemExit as e:
             if e.args:  # SystemExit called with an argument.
                 ob = e.args[0]
@@ -615,7 +615,7 @@ class Executive:
             flush_stdout()
 
     def interrupt_the_server(self):
-        if interruptable:
+        if interruptible:
             thread.interrupt_main()
 
     def start_the_debugger(self, gui_adap_oid):