Fix indentation in test files

test/highlight/comments.bp

@@ -1,10 +1,9 @@
 /* This is a comment             */
-/* <- comment
-            ^ comment
-                                ^ comment
- */
+// <- comment
+//          ^ comment
+//                              ^ comment
+
 // And another comment
-/* <- comment
-            ^ comment
-                     ^ comment
- */
+// <- comment
+//          ^ comment
+//                   ^ comment

test/highlight/modules.bp

@@ -4,16 +4,16 @@ foo {}
 foo ()
 // <- function.call
 
-foo {
-// <- function.call
+some_module {
+    // ^ function.call
     field: 12,
     // <- variable.parameter
     another_field: 27,
     // <- variable.parameter
 }
 
-foo (
-// <- function.call
+some_module (
+    // ^ function.call
     field = 42,
     // <- variable.parameter
     done = false,

test/highlight/properties.bp

@@ -1,6 +1,6 @@
 foo {
-    field: {
-    // <- variable.parameter
+    some_field: {
+        // ^ variable.parameter
         key: 42,
         // <- property
     },

test/highlight/punctuation.bp

@@ -3,7 +3,6 @@ foo (
     bar = [
         //^ punctuation.bracket
         {
-        // <- punctuation.bracket
             key: "value",
             // ^ punctuation.delimiter
             //          ^ punctuation.delimiter