Fix license headers

Summary:
They were set up as javadocs (double-asterisk at the start) but should be normal
block headers.

Reviewed By: IanChilds

Differential Revision: D5255424

fbshipit-source-id: 23439ac035f74f2fd1c756b8185e39199e748e33

java/com/facebook/yoga/YogaAlign.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaBaselineFunction.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaConfig.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaConstants.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaDimension.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaDirection.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaDisplay.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaEdge.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaExperimentalFeature.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaFlexDirection.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaJustify.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaLogLevel.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaLogger.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaMeasureFunction.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaMeasureMode.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaMeasureOutput.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaNode.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaNodeType.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaOverflow.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaPositionType.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaPrintOptions.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaUnit.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaValue.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *

java/com/facebook/yoga/YogaWrap.java

@@ -1,4 +1,4 @@
-/**
+/*
  * Copyright (c) 2014-present, Facebook, Inc.
  * All rights reserved.
  *