patch 8.1.0507: .raml files not properly detected

Problem:    .raml files not properly detected.
Solution:   Recognize .raml as raml instead of yaml. (closes #3594)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 9c53764..d146bd2 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -495,6 +495,7 @@
     \ 'xslt': ['file.xsl', 'file.xslt'],
     \ 'yacc': ['file.yy', 'file.yxx', 'file.y++'],
     \ 'yaml': ['file.yaml', 'file.yml'],
+    \ 'raml': ['file.raml'],
     \ 'z8a': ['file.z8a'],
     \ 'zimbu': ['file.zu'],
     \ 'zimbutempl': ['file.zut'],
diff --git a/src/version.c b/src/version.c
index 54b9a6c..28f39d4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -793,6 +793,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    507,
+/**/
     506,
 /**/
     505,