iPadOS 13
Change automatic typing options for an external keyboard on iPad
You can change how iPad automatically responds to your typing on an external keyboard.
Go to Settings > General > Keyboard > Hardware Keyboard, then do any of the following:
Turn Auto-Capitalization on or off: When this option is selected, an app supporting this feature capitalizes proper nouns and the first words in sentences as you type.
Turn Auto-Correction on or off: When this option is selected, an app supporting this feature corrects the spelling as you type.
Turn “.” Shortcut on or off: When this option is selected, double-tapping the space bar inserts a period followed by a space.