RUBY-1111 Fix typos

Author: estolfo

lib/mongo/grid/fs_bucket.rb

@@ -373,7 +373,7 @@ def open_upload_stream(filename, opts = {})
       # @param [ IO ] io The source io stream to upload from.
       # @param [ Hash ] opts The options for the write stream.
       #
-      # @option opts [ Integer ] :file_id An optional unique file id. An ObjectId is generated otherwise.
+      # @option opts [ Object ] :file_id An optional unique file id. An ObjectId is generated otherwise.
       # @option opts [ Integer ] :chunk_size Override the default chunk size.
       # @option opts [ Hash ] :write The write concern.
       # @option opts [ Hash ] :metadata User data for the 'metadata' field of the files

lib/mongo/grid/stream/write.rb

@@ -27,7 +27,7 @@ class Write
           # @since 2.1.0
           attr_reader :fs
 
-          # @return [ Obejct ] file_id The id of the file being uploaded.
+          # @return [ Object ] file_id The id of the file being uploaded.
           #
           # @since 2.1.0
           attr_reader :file_id