trivial(doc): post #1090 cosmetic update (#1097) (#1107)

SUMMARY
Name of the Helm plays in the integration test framework test updated to reflect the actual version of Helm (addressed comments #1090 (review))
Updated documentation for the modules updated in the PR with the https://github.com/ansible-network/collection_prep, as per CONTRIBUTING.md
ISSUE TYPE

Docs Pull Request

COMPONENT NAME

tests/integration/targets/helm_v3_*/play.yaml
docs/kubernetes.core.helm*.rst

ADDITIONAL INFORMATION
Only cosmetic changes in this PR, so the label skip-changelog is suggested

Reviewed-by: Bianca Henderson <beeankha@gmail.com>
(cherry picked from commit 16e92a20e8)

Co-authored-by: Yuriy Novostavskiy <yuriy@novostavskiy.kyiv.ua>

docs/kubernetes.core.helm_registry_auth_module.rst

@@ -25,7 +25,7 @@ Requirements
 ------------
 The below requirements are needed on the host that executes this module.
 
-- helm (https://github.com/helm/helm/releases) >= 3.8.0, <4.0.0
+- helm (https://github.com/helm/helm/releases) >= 3.8.0
 
 
 Parameters
@@ -151,6 +151,27 @@ Parameters
                         <div style="font-size: small; color: darkgreen"><br/>aliases: repo_password</div>
                 </td>
             </tr>
+            <tr>
+                <td colspan="1">
+                    <div class="ansibleOptionAnchor" id="parameter-"></div>
+                    <b>plain_http</b>
+                    <a class="ansibleOptionLink" href="#parameter-" title="Permalink to this option"></a>
+                    <div style="font-size: small">
+                        <span style="color: purple">boolean</span>
+                    </div>
+                    <div style="font-style: italic; font-size: small; color: darkgreen">added in 6.4.0</div>
+                </td>
+                <td>
+                        <ul style="margin: 0; padding: 0"><b>Choices:</b>
+                                    <li><div style="color: blue"><b>no</b>&nbsp;&larr;</div></li>
+                                    <li>yes</li>
+                        </ul>
+                </td>
+                <td>
+                        <div>Use insecure HTTP connections for <code>helm registry login</code>.</div>
+                        <div>Requires Helm &gt;= 3.18.0</div>
+                </td>
+            </tr>
             <tr>
                 <td colspan="1">
                     <div class="ansibleOptionAnchor" id="parameter-"></div>