docs(readme): update a key binding in the readme file

README.md

@@ -273,7 +273,7 @@ Key                                     | Description
 <kbd>Ctrl+Space</kbd>                   | If the query panel is active, execute the query
 <kbd>Enter</kbd>                        | If the tables panel is active, list all the rows as a result set on the rows panel and display the structure of the table on the structure panel
 <kbd>Ctrl+S</kbd>                       | If the rows panel is active, switch to the schema panel. The opposite is true
-<kbd>Ctrl+F</kbd>                       | If the rows panel is active, switch to the constraints view. The opposite is true
+<kbd>Ctrl+T</kbd>                       | If the rows panel is active, switch to the constraints view. The opposite is true
 <kbd>Ctrl+I</kbd>                       | If the rows panel is active, switch to the indexes view. The opposite is true
 <kbd>Ctrl+H</kbd>                       | Toggle to the panel on the left
 <kbd>Ctrl+J</kbd>                       | Toggle to the panel below