fix CI - Sentence case - markdownlint

Signed-off-by: meliketanrikulu <melike@leodrive.ai>

Co-authored-by: M. Fatih Cırıt <xmfcx@users.noreply.github.com>

Author: meliketanrikulu

localization/autoware_pose_covariance_modifier_node/README.md

@@ -22,22 +22,22 @@ to the error values coming from GNSS, it also manages situations where GNSS and
 <img src="./media/new_proposal-proposal.drawio.png" width="620">
 </p>
 
-## Activate This Feuture
+## Activate this feature
 
 This package is not used by default autoware, you need to activate it to use it.
 
 To activate, you need to change the `use_autoware_pose_covariance_modifier` parameter to true within the [tier4_localization_launch](https://github.com/autowarefoundation/autoware.universe/blob/main/launch/tier4_localization_launch/launch/localization.launch.xml).
 
-# Node
+## Node
 
-## Subscribed Topics
+### Subscribed topics
 
 | Name                                | Type                                            | Description            |
 | ----------------------------------- | ----------------------------------------------- | ---------------------- |
 | `input_trusted_pose_with_cov_topic` | `geometry_msgs::msg::PoseWithCovarianceStamped` | Input GNSS pose topic. |
 | `input_ndt_pose_with_cov_topic`     | `geometry_msgs::msg::PoseWithCovarianceStamped` | Input NDT pose topic.  |
 
-## Published Topics
+### Published topics
 
 | Name                                | Type                                            | Description                                                                                             |
 | ----------------------------------- | ----------------------------------------------- | ------------------------------------------------------------------------------------------------------- |
@@ -46,7 +46,7 @@ To activate, you need to change the `use_autoware_pose_covariance_modifier` para
 | `output/ndt_position_rmse`          | `std_msgs::msg::Float32`                        | Output pose ndt avarage rmse in position xy. It is published only when the enable_debug_topics is true. |
 | `output/gnss_position_rmse`         | `std_msgs::msg::Float32`                        | Output pose gnss avarage rmse in position xy.It is published only when the enable_debug_topics is true. |
 
-## Parameters
+### Parameters
 
 | Name                                         | Type     | Description                                                                    |
 | -------------------------------------------- | -------- | ------------------------------------------------------------------------------ |
@@ -55,7 +55,7 @@ To activate, you need to change the `use_autoware_pose_covariance_modifier` para
 | `error_thresholds.yaw_error_deg_threshold`   | `double` | Threshold value to understand whether the yaw error is within reliable limits. |
 | `debug.enable_debug_topics`                  | `bool`   | Enables the debug topics                                                       |
 
-### Important Notes
+## Important notes
 
 - In order to use this package, your GNSS sensor must provide you with the error value. If you do not have a GNSS sensor that provides you with the error value, you cannot use this package.
 - You need to use this package with georeferenced map