refactor: Update external database configuration in HelmChart

This code change updates the external database configuration in the HelmChart. It adds support for using an existing secret for the password instead of directly specifying the password. This modification enhances security and allows for easier management of the database credentials.

HelmChart/Public/oneuptime/README.md

@@ -139,7 +139,7 @@ externalPostgres:
   port: 
   username: 
   password: 
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.
@@ -170,7 +170,7 @@ externalRedis:
   host: 
   port: 
   password: 
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.
@@ -203,7 +203,7 @@ externalClickhouse:
   port: 
   username: 
   password: 
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.

HelmChart/Public/oneuptime/values.yaml

@@ -275,7 +275,7 @@ externalPostgres:
   port: 
   username: 
   password:
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.
@@ -297,7 +297,7 @@ externalRedis:
   port: 
   username:
   password:
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.
@@ -321,7 +321,7 @@ externalClickhouse:
   port: 
   username: 
   password:
-  # If you're using existing secret for the password, please use this instead of password. 
+  # If you're using an existing secret for the password, please use this instead of password. 
   existingSecret:
     name: 
     # This is the key in the secret where the password is stored.