doc: sync cn and en contribution doc with server CONTRIBUTION.md (#279)

* modify ASF and remove meaningless CLA

---------

Co-authored-by: imbajin <[email protected]> 0a32867

cn/docs/contribution-guidelines/index.xml

@@ -6,6 +6,7 @@
 <p>The following is a contribution guide for HugeGraph:</p>
 <img width="884" alt="image" src="https://user-images.githubusercontent.com/9625821/159643158-8bf72c0a-93c3-4a58-8912-7b2ab20ced1d.png">
 <h2 id="1-preparation">1. Preparation</h2>
+<p><strong>建议</strong>: 使用 <a href="https://desktop.github.com/">GitHub desktop</a> 可以大幅简化和改善你提交 PR/Commit 的过程, 特别适合新人</p>
 <p>We can contribute by reporting issues, submitting code patches or any other feedback.</p>
 <p>Before submitting the code, we need to do some preparation:</p>
 <ol>
@@ -32,7 +33,6 @@
 </span></span><span style="display:flex;"><span>git config user.email <span style="color:#4e9a06">"{email-address-of-github}"</span> <span style="color:#8f5902;font-style:italic"># like "[email protected]"</span>
 </span></span></code></pre></div></li>
 </ol>
-<p>Optional: You can use <a href="https://desktop.github.com/">GitHub desktop</a> to greatly simplify the commit and update process.</p>
 <h2 id="2-create-an-issue-on-github">2. Create an Issue on GitHub</h2>
 <p>If you encounter bugs or have any questions, please go to <a href="https://github.com/apache/incubator-hugegraph/issues">GitHub Issues</a> to report them and feel free to <a href="https://github.com/apache/hugegraph/issues/new">create an issue</a>.</p>
 <h2 id="3-make-changes-of-code-locally">3. Make changes of code locally</h2>
@@ -89,8 +89,6 @@
 <img width="1280" alt="image" src="https://user-images.githubusercontent.com/9625821/163524204-7fe0e6bf-9c8b-4b1a-ac65-6a0ac423eb16.png"></p>
 <h2 id="4-create-a-pull-request">4. Create a Pull Request</h2>
 <p>Go to the web page of GitHub fork repo, there would be a chance to create a Pull Request after pushing to a new branch, just click button “Compare & pull request” to do it. Then edit the description for proposed changes, which can just be copied from the commit message.</p>
-<p>Please sign the HugeGraph CLA when contributing code for the first time. You can sign the CLA by just posting a Pull Request Comment same as the below format:</p>
-<p><code>I have read the CLA Document and I hereby sign the CLA</code></p>
 <p>Note: please make sure the email address you used to submit the code is bound to the GitHub account. For how to bind the email address, please refer to <a href="https://github.com/settings/emails">https://github.com/settings/emails</a>:
 <img width="1280" alt="image" src="https://user-images.githubusercontent.com/9625821/163522445-2a50a72a-dea2-434f-9868-3a0d40d0d037.png"></p>
 <h2 id="5-code-review">5. Code review</h2>

cn/docs/index.xml

@@ -2306,6 +2306,7 @@ HugeGraph支持多用户并行操作，用户可输入Gremlin查询语句，并
 <p>The following is a contribution guide for HugeGraph:</p>
 <img width="884" alt="image" src="https://user-images.githubusercontent.com/9625821/159643158-8bf72c0a-93c3-4a58-8912-7b2ab20ced1d.png">
 <h2 id="1-preparation">1. Preparation</h2>
+<p><strong>建议</strong>: 使用 <a href="https://desktop.github.com/">GitHub desktop</a> 可以大幅简化和改善你提交 PR/Commit 的过程, 特别适合新人</p>
 <p>We can contribute by reporting issues, submitting code patches or any other feedback.</p>
 <p>Before submitting the code, we need to do some preparation:</p>
 <ol>
@@ -2332,7 +2333,6 @@ HugeGraph支持多用户并行操作，用户可输入Gremlin查询语句，并
 </span></span><span style="display:flex;"><span>git config user.email <span style="color:#4e9a06">"{email-address-of-github}"</span> <span style="color:#8f5902;font-style:italic"># like "[email protected]"</span>
 </span></span></code></pre></div></li>
 </ol>
-<p>Optional: You can use <a href="https://desktop.github.com/">GitHub desktop</a> to greatly simplify the commit and update process.</p>
 <h2 id="2-create-an-issue-on-github">2. Create an Issue on GitHub</h2>
 <p>If you encounter bugs or have any questions, please go to <a href="https://github.com/apache/incubator-hugegraph/issues">GitHub Issues</a> to report them and feel free to <a href="https://github.com/apache/hugegraph/issues/new">create an issue</a>.</p>
 <h2 id="3-make-changes-of-code-locally">3. Make changes of code locally</h2>
@@ -2389,8 +2389,6 @@ HugeGraph支持多用户并行操作，用户可输入Gremlin查询语句，并
 <img width="1280" alt="image" src="https://user-images.githubusercontent.com/9625821/163524204-7fe0e6bf-9c8b-4b1a-ac65-6a0ac423eb16.png"></p>
 <h2 id="4-create-a-pull-request">4. Create a Pull Request</h2>
 <p>Go to the web page of GitHub fork repo, there would be a chance to create a Pull Request after pushing to a new branch, just click button “Compare & pull request” to do it. Then edit the description for proposed changes, which can just be copied from the commit message.</p>
-<p>Please sign the HugeGraph CLA when contributing code for the first time. You can sign the CLA by just posting a Pull Request Comment same as the below format:</p>
-<p><code>I have read the CLA Document and I hereby sign the CLA</code></p>
 <p>Note: please make sure the email address you used to submit the code is bound to the GitHub account. For how to bind the email address, please refer to <a href="https://github.com/settings/emails">https://github.com/settings/emails</a>:
 <img width="1280" alt="image" src="https://user-images.githubusercontent.com/9625821/163522445-2a50a72a-dea2-434f-9868-3a0d40d0d037.png"></p>
 <h2 id="5-code-review">5. Code review</h2>