docs: some typos (#18582)

probably hacktoberism

docs/feature_oled_driver.md

@@ -259,12 +259,12 @@ void oled_render(void);
 void oled_set_cursor(uint8_t col, uint8_t line);
 
 // Advances the cursor to the next page, writing ' ' if true
-// Wraps to the begining when out of bounds
+// Wraps to the beginning when out of bounds
 void oled_advance_page(bool clearPageRemainder);
 
 // Moves the cursor forward 1 character length
 // Advance page if there is not enough room for the next character
-// Wraps to the begining when out of bounds
+// Wraps to the beginning when out of bounds
 void oled_advance_char(void);
 
 // Writes a single character to the buffer at current cursor position