[fix](doc) avoid generate config doc automatically (apache#19302)

After apache#19246, when compilng FE, it will automatically generate Config and Session Variables doc and overwrite the origin one.
Need to avoid it because it is not ready to use yet

build.sh

@@ -512,9 +512,9 @@ if [[ "${FE_MODULES}" != '' ]]; then
         clean_fe
     fi
     if [[ "${DISABLE_JAVA_CHECK_STYLE}" = "ON" ]]; then
-        "${MVN_CMD}" package -pl ${FE_MODULES:+${FE_MODULES}} -DskipTests -Dcheckstyle.skip=true
+        "${MVN_CMD}" package -pl ${FE_MODULES:+${FE_MODULES}} -Dskip.doc=true -DskipTests -Dcheckstyle.skip=true
     else
-        "${MVN_CMD}" package -pl ${FE_MODULES:+${FE_MODULES}} -DskipTests
+        "${MVN_CMD}" package -pl ${FE_MODULES:+${FE_MODULES}} -Dskip.doc=true -DskipTests
     fi
     cd "${DORIS_HOME}"
 fi

fe/fe-core/pom.xml

@@ -836,6 +836,7 @@ under the License.
                                 <argument>${doris.home}/docs/en/docs/advanced/variables.md</argument>
                                 <argument>${doris.home}/docs/zh-CN/docs/advanced/variables.md</argument>
                             </arguments>
+                            <skip>${skip.doc}</skip>
                         </configuration>
                     </execution>
                 </executions>