feat: update config for using placeholders in docs

Author: awxiaoxian2020

pom.xml

@@ -397,11 +397,35 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-resources-plugin</artifactId>
+        <executions>
+          <!-- prepare site content by filtering ${project.*} values-->
+          <execution>
+            <id>filter-site</id>
+            <phase>pre-site</phase>
+            <goals>
+              <goal>copy-resources</goal>
+            </goals>
+            <configuration>
+              <outputDirectory>${project.build.directory}/site-src</outputDirectory>
+              <resources>
+                <resource>
+                  <directory>src/site</directory>
+                  <filtering>true</filtering>
+                </resource>
+              </resources>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-site-plugin</artifactId>
         <configuration>
           <locales>en,es,ja,fr,zh_CN,ko</locales>
+          <siteDirectory>${project.build.directory}/site-src</siteDirectory>
         </configuration>
       </plugin>
       <plugin>