tests: apply official code style

#KT-38632 Fixed

idea/testData/inspectionsLocal/useExpressionBody/convertToExpressionBody/keepComments/2.kt.after

@@ -1,2 +1,2 @@
 fun getText(): String =// let's return xxx
-        "xxx" //TODO
+    "xxx" //TODO

idea/testData/inspectionsLocal/useExpressionBody/convertToExpressionBody/keepComments/3.kt.after

@@ -1,2 +1,2 @@
 fun getText(): String =// let's return xxx
-        "xxx"
+    "xxx"

idea/testData/inspectionsLocal/useExpressionBody/convertToExpressionBody/keepComments/4.kt.after

@@ -1,2 +1,2 @@
 fun getText(): String =/* let's return xxx */
-        "xxx" /* TODO */
+    "xxx" /* TODO */

idea/testData/inspectionsLocal/useExpressionBody/if.kt.after

@@ -1,9 +1,9 @@
 // HIGHLIGHT: INFORMATION
 
 fun abs(x: Int): Int =// No highlighting here
-        if (x > 0) {
-            x
-        }
-        else {
-            -x
-        }
+    if (x > 0) {
+        x
+    }
+    else {
+        -x
+    }

idea/testData/inspectionsLocal/useExpressionBody/veryVeryLong.kt.after

@@ -1,4 +1,4 @@
 fun foo(s1: String, s2: String) = s1 + s2
 
 fun bar(): String =
-        foo("gjahkrgkjuyrtetyuairytoiuyareoihuyitouy897304hkdjgnba", "uiyiuye987130423toiuywtuiyrwityriwyhw")
+    foo("gjahkrgkjuyrtetyuairytoiuyareoihuyitouy897304hkdjgnba", "uiyiuye987130423toiuywtuiyrwityriwyhw")