Fix typo for store_serialized_dags config
diff --git a/airflow/config_templates/config.yml b/airflow/config_templates/config.yml
index 1b7530fc88383..5033c342e503d 100644
--- a/airflow/config_templates/config.yml
+++ b/airflow/config_templates/config.yml
@@ -321,7 +321,7 @@
       default: "0"
     - name: store_serialized_dags
       description: |
-        Whether to serialises DAGs and persist them in DB.
+        Whether to serialise DAGs and persist them in DB.
         If set to True, Webserver reads from DB instead of parsing DAG files
         More details: https://airflow.apache.org/docs/stable/dag-serialization.html
       version_added: 1.10.7
diff --git a/airflow/config_templates/default_airflow.cfg b/airflow/config_templates/default_airflow.cfg
index a1d78dd4cfd74..dfd779056fffe 100644
--- a/airflow/config_templates/default_airflow.cfg
+++ b/airflow/config_templates/default_airflow.cfg
@@ -184,7 +184,7 @@ dag_discovery_safe_mode = True
 # The number of retries each task is going to have by default. Can be overridden at dag or task level.
 default_task_retries = 0
 
-# Whether to serialises DAGs and persist them in DB.
+# Whether to serialise DAGs and persist them in DB.
 # If set to True, Webserver reads from DB instead of parsing DAG files
 # More details: https://airflow.apache.org/docs/stable/dag-serialization.html
 store_serialized_dags = False
diff --git a/docs/dag-serialization.rst b/docs/dag-serialization.rst
index dccffdcb35eaa..7802a09a041a9 100644
--- a/docs/dag-serialization.rst
+++ b/docs/dag-serialization.rst
@@ -59,7 +59,7 @@ Add the following settings in ``airflow.cfg``:
     store_serialized_dags = True
     min_serialized_dag_update_interval = 30
 
-*   ``store_serialized_dags``: This flag decides whether to serialises DAGs and persist them in DB.
+*   ``store_serialized_dags``: This flag decides whether to serialise DAGs and persist them in DB.
     If set to True, Webserver reads from DB instead of parsing DAG files
 *   ``min_serialized_dag_update_interval``: This flag sets the minimum interval (in seconds) after which
     the serialized DAG in DB should be updated. This helps in reducing database write rate.

Reported by a user on slack

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Issue link: WILL BE INSERTED BY [boring-cyborg](https://github.com/kaxil/boring-cyborg)

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