Fix typos in README.md and global_config.glade

Author: bartlomiejkida

README.md

@@ -72,7 +72,7 @@ available locations are:
 
 ## Code formatting
 
-Code in this repository is formatted using `black`. Before commiting changes run:
+Code in this repository is formatted using `black`. Before committing changes run:
 
     black .
 

qubes_config/global_config.glade

@@ -1640,7 +1640,7 @@
                           <object class="GtkLabel">
                             <property name="visible">True</property>
                             <property name="can-focus">False</property>
-                            <property name="label" translatable="yes">Default Linux Kernal:</property>
+                            <property name="label" translatable="yes">Default Linux Kernel:</property>
                             <property name="xalign">0</property>
                             <style>
                               <class name="main_text"/>