chore: fix some comments (#4055)

# What this PR does

Fix typos in comments

## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

Signed-off-by: teslaedison <qingchengqiushuang@gmail.com>
Co-authored-by: Joey Orlando <joey.orlando@grafana.com>

docs/sources/configure/outgoing-webhooks/index.md

@@ -20,7 +20,7 @@ aliases:
 # Outgoing Webhooks
 
 > ⚠️ A note about **(Legacy)** webhooks: Webhooks that were created before version **v1.3.11** are marked as
-> **(Legacy)**. Do not worry! They are still connected to their respective escalation chains and will continue to to
+> **(Legacy)**. Do not worry! They are still connected to their respective escalation chains and will continue to
 > execute as they always have.
 > <br/><br/>
 > The **(Legacy)** webhook is no longer editable due to changes to the internal representation. If you need to edit it

engine/apps/social_auth/backends.py

@@ -11,7 +11,7 @@ from apps.auth_token.models import SlackAuthToken
 USER_SCOPE = ["channels:read", "identify", "chat:write", "users.profile:read", "users:read", "users:read.email"]
 
 # Scopes for slack bot token.
-# Is is prime token we are using for most requests to Slack api.
+# It is prime token we are using for most requests to Slack api.
 # Changing these scopes requires confirmation in Slack app settings.
 BOT_SCOPE = [
     "app_mentions:read",

engine/common/custom_celery_tasks/dedicated_queue_retry_task.py

@@ -11,7 +11,7 @@ logger = logger = get_task_logger(__name__)
 class DedicatedQueueRetryTask(LogExceptionOnFailureTask):
     """
     Custom task sends all retried task to the dedicated retry queue.
-    Is is needed to not to overload regular (high, medium, low) queues with retried tasks.
+    It is needed to not to overload regular (high, medium, low) queues with retried tasks.
     """
 
     def retry(

engine/common/utils.py

@@ -167,7 +167,7 @@ def isoformat_with_tz_suffix(value):
     Default python datetime.isoformat() return tz offset like +00:00 instead of military tz suffix (e.g.Z for UTC)".
     On the other hand DRF returns datetime with military tz suffix.
     This utility function exists to return consistent datetime string in api.
-    Is is copied from DRF DateTimeField.to_representation
+    It is copied from DRF DateTimeField.to_representation
     """
     value = value.isoformat()
     if value.endswith("+00:00"):