Update syntax checking

* Line continuation characters should be on the same lines.
* .vim file line indentation should be a multiple of 4.

ale_linters/kotlin/kotlinc.vim

@@ -20,7 +20,7 @@ function! ale_linters#kotlin#kotlinc#GetImportPaths(buffer) abort
 
         if !empty(l:pom_path) && executable('mvn')
             return ale#path#CdString(fnamemodify(l:pom_path, ':h'))
-                        \ . 'mvn dependency:build-classpath'
+            \   . 'mvn dependency:build-classpath'
         endif
 
         let l:classpath_command = ale#gradle#BuildClasspathCommand(a:buffer)