fix bug

Documentation/apm.md

 }
 ```
 
-
+Add the APM plug-in to the baseProjectTemplate.gradle file.
-2. Add the APM plug-in to the baseProjectTemplate.gradle file.
-
-   ```
-   buildscript {
-      repositories {
-        // Add the maven repository
-        maven { url 'https://developer.huawei.com/repo/' }
-      }
-      dependencies {
-        // ...
-        // To benefit from the latest APM feaures, update your Android Gradle Plugin dependency to at least v3.3.2
-        classpath 'com.android.tools.build:gradle:3.3.2'
-        // Add the dependency for the APM plugin
-        classpath 'com.huawei.agconnect:agconnect-apms-plugin:1.5.2.300'
-      }
-   }
-   ```
+```
+buildscript {
+  repositories {
+    // Add the maven repository
+    maven { url 'https://developer.huawei.com/repo/' }
+  }
+  dependencies {
+    // ...
+    // To benefit from the latest APM feaures, update your Android Gradle Plugin dependency to at least v3.3.2
+    classpath 'com.android.tools.build:gradle:3.3.2'
+    // Add the dependency for the APM plugin
+    classpath 'com.huawei.agconnect:agconnect-apms-plugin:1.5.2.300'
+  }
+}
+```
 
 ## Developing with the SDK