Fix typos and improve comment readability

Author: jserv

alldefconfig.py

@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: ISC
 
 """
-Writes a configuration file where all symbols are set to their their default
+Writes a configuration file where all symbols are set to their default
 values.
 
 The default output filename is '.config'. A different filename can be passed in

guiconfig.py

@@ -665,7 +665,7 @@ def _create_kconfig_desc(parent):
     desc = Text(frame, height=12, wrap="none", borderwidth=0, state="disabled")
     desc.grid(column=0, row=0, sticky="nsew")
 
-    # Work around not being to Ctrl-C/V text from a disabled Text widget, with a
+    # Work around not being able to Ctrl-C/V text from a disabled Text widget, with a
     # tip found in https://stackoverflow.com/questions/3842155/is-there-a-way-to-make-the-tkinter-text-widget-read-only
     desc.bind("<1>", lambda _: desc.focus_set())
 

setconfig.py

@@ -39,7 +39,7 @@ def main():
         "--no-check-exists",
         dest="check_exists",
         action="store_false",
-        help="Ignore assignments to non-existent symbols instead of erroring " "out",
+        help="Ignore assignments to non-existent symbols instead of erroring out",
     )
 
     parser.add_argument(

testsuite.py

@@ -19,7 +19,7 @@
 #    make sure everything passes with it.
 #
 #  - obsessive-min-config:
-#    Like obsessive, for the minimal configuation (defconfig) tests.
+#    Like obsessive, for the minimal configuration (defconfig) tests.
 #
 #  - log:
 #    Log timestamped defconfig test failures to the file test_defconfig_fails.