fix definition many shapes inside a container

grammar.js

@@ -96,9 +96,7 @@ module.exports = grammar({
       seq(
         spaces,
         "{",
-        repeat(
-          choice($._emptyline, seq(spaces, $._shape_block_definition, $._end))
-        ),
+        repeat(choice($._emptyline, seq(spaces, $._shape_block_definition))),
         optional(seq($._shape_block_definition, optional($._end))),
         spaces,
         "}"

src/grammar.json

@@ -527,10 +527,6 @@
                   {
                     "type": "SYMBOL",
                     "name": "_shape_block_definition"
-                  },
-                  {
-                    "type": "SYMBOL",
-                    "name": "_end"
                   }
                 ]
               }

test/corpus/container.txt

@@ -74,3 +74,24 @@ foo: Foo {
   )
 )
 
+================================================================================
+Declare many shapes inside a container
+================================================================================
+
+foo: {
+  bar
+  biz
+  baz
+}
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (shape_key)
+  (block
+    (shape_key)
+    (shape_key)
+    (shape_key)
+  )
+)
+