fix-up typo

Signed-off-by: chentanjun <2799194073@qq.com>

test/plugin/out_forward/test_socket_cache.rb

@@ -5,7 +5,7 @@
 
 class SocketCacheTest < Test::Unit::TestCase
   sub_test_case 'checkout_or' do
-    test 'when gived key does not exist' do
+    test 'when given key does not exist' do
       c = Fluent::Plugin::ForwardOutput::SocketCache.new(10, $log)
       sock = mock!.open { 'socket' }.subject
       assert_equal('socket', c.checkout_or('key') { sock.open })

test/plugin/test_buffer_file_chunk.rb

@@ -495,7 +495,7 @@ def gen_chunk_path(prefix, unique_id)
     end
   end
 
-  test 'ensure to remove metadata file if #write_metadata raise an error becuase of disk full' do
+  test 'ensure to remove metadata file if #write_metadata raise an error because of disk full' do
     chunk_path = File.join(@chunkdir, 'test.*.log')
     stub(Fluent::UniqueId).hex(anything) { 'id' } # to fix chunk id
 

test/plugin/test_output_as_buffered.rb

@@ -1112,7 +1112,7 @@ def waiting(seconds)
         assert_equal(0, @i.write_count)
 
         Timecop.freeze(Time.parse('2019-02-09 00:00:12 +0900'))
-        # wirte should be called in few seconds since
+        # write should be called in few seconds since
         # running interval of enque thread is timekey_wait / 11.0.
         waiting(5){ sleep 0.1 until @i.write_count == 1 }
       end

test/test_root_agent.rb

@@ -710,7 +710,7 @@ def configure_ra(conf_str)
       end
     end
 
-    test 'raises configuration error for worker id collisions on multi workers syntax when multi avaliable worker_ids are left' do
+    test 'raises configuration error for worker id collisions on multi workers syntax when multi available worker_ids are left' do
       errmsg = "specified worker_id<1> collisions is detected on <worker> directive. Available worker id(s): [2, 3]"
       assert_raise Fluent::ConfigError.new(errmsg) do
         conf = <<-EOC