Fix typos (bevyengine#9965)

# Objective

- There were a few typos in the project.
- This PR fixes these typos.

## Solution

- Fixing the typos.

Signed-off-by: SADIK KUZU <[email protected]>

crates/bevy_ecs/src/schedule/schedule.rs

@@ -251,7 +251,7 @@ impl Schedule {
 
         world.check_change_ticks();
         self.initialize(world)
-            .unwrap_or_else(|e| panic!("Error when intializing schedule {:?}: {e}", self.name));
+            .unwrap_or_else(|e| panic!("Error when initializing schedule {:?}: {e}", self.name));
         self.executor.run(&mut self.executable, world);
     }
 

crates/bevy_ecs/src/system/system_registry.rs

@@ -43,7 +43,7 @@ pub struct SystemId(Entity);
 impl World {
     /// Registers a system and returns a [`SystemId`] so it can later be called by [`World::run_system`].
     ///
-    /// It's possible to register the same systems more than once, they'll be stored seperately.
+    /// It's possible to register the same systems more than once, they'll be stored separately.
     ///
     /// This is different from adding systems to a [`Schedule`](crate::schedule::Schedule),
     /// because the [`SystemId`] that is returned can be used anywhere in the [`World`] to run the associated system.

crates/bevy_ecs/src/world/entity_ref.rs

@@ -174,15 +174,15 @@ impl<'a> From<&'a EntityWorldMut<'_>> for EntityRef<'a> {
 impl<'w> From<EntityMut<'w>> for EntityRef<'w> {
     fn from(value: EntityMut<'w>) -> Self {
         // SAFETY:
-        // - `EntityMut` gurantees exclusive access to all of the entity's components.
+        // - `EntityMut` guarantees exclusive access to all of the entity's components.
         unsafe { EntityRef::new(value.0) }
     }
 }
 
 impl<'a> From<&'a EntityMut<'_>> for EntityRef<'a> {
     fn from(value: &'a EntityMut<'_>) -> Self {
         // SAFETY:
-        // - `EntityMut` gurantees exclusive access to all of the entity's components.
+        // - `EntityMut` guarantees exclusive access to all of the entity's components.
         // - `&value` ensures there are no mutable accesses.
         unsafe { EntityRef::new(value.0) }
     }

crates/bevy_hierarchy/src/components/parent.rs

@@ -26,7 +26,7 @@ impl Parent {
 
     /// Gets the parent [`Entity`] as a slice of length 1.
     ///
-    /// Useful for making APIs that require a type or homogenous storage
+    /// Useful for making APIs that require a type or homogeneous storage
     /// for both [`Children`] & [`Parent`] that is agnostic to edge direction.
     ///
     /// [`Children`]: super::children::Children

crates/bevy_ui/src/ui_node.rs

@@ -1392,7 +1392,7 @@ fn try_into_grid_span(span: u16) -> Result<Option<NonZeroU16>, GridPlacementErro
     ))
 }
 
-/// Errors that occur when setting contraints for a `GridPlacement`
+/// Errors that occur when setting constraints for a `GridPlacement`
 #[derive(Debug, Eq, PartialEq, Clone, Copy, Error)]
 pub enum GridPlacementError {
     #[error("Zero is not a valid grid position")]

examples/input/gamepad_input_events.rs

@@ -24,7 +24,7 @@ fn gamepad_events(
     // Handles the boolean measure of whether a button is considered pressed or unpressed, as
     // defined by the thresholds in `GamepadSettings::button_settings` and measured by
     // `Input<GamepadButton>`. When the threshold is crossed and the button state changes,
-    // this event is emmitted.
+    // this event is emitted.
     mut button_input_events: EventReader<GamepadButtonInput>,
 ) {
     for connection_event in connection_events.read() {