Fix typo: guideline and code document (#4248)

docs/en/guides/How-to-build.md

@@ -133,6 +133,6 @@ Refer to [Build docker image](../../../docker) for more details.
 </dependency>
 ```
 5. Run `./mvnw compile -Dmaven.test.skip=true`
-6. Run `maven update`. Must remove the clean projects item before maven update(This will be clear the proto conversion Java file generated by the complie)
+6. Run `maven update`. Must remove the clean projects item before maven update(This will be clear the proto conversion Java file generated by the compiling)
 7. Run `./mvnw compile` compile collector-remote-grpc-provider and apm-protocol
 8. Refresh project

oap-server/server-library/library-module/src/main/java/org/apache/skywalking/oap/server/library/module/ModuleProvider.java

@@ -76,7 +76,7 @@ public abstract class ModuleProvider implements ModuleServiceHolder {
     public abstract String[] requiredModules();
 
     /**
-     * Register a implementation for the service of this moduleDefine provider.
+     * Register an implementation for the service of this moduleDefine provider.
      */
     @Override public final void registerServiceImplementation(Class<? extends Service> serviceType,
         Service service) throws ServiceNotProvidedException {