Change syntax format for example returned values

According to our guideline, we leave 1 space between `#` and `=>`, so we
want `# =>` instead of `#=>`.

Thanks to @fxn for the suggestion.

[ci skip]

1 files changed, 6 insertions, 6 deletions

diff --git a/activerecord/lib/active_record/associations/join_dependency.rb b/activerecord/lib/active_record/associations/join_dependency.rb
index c3ac0680ea..3e743c4bfe 100644
--- a/activerecord/lib/active_record/associations/join_dependency.rb
+++ b/activerecord/lib/active_record/associations/join_dependency.rb
@@ -83,14 +83,14 @@ module ActiveRecord
       #  end
       #
       #  If I execute `@physician.patients.to_a` then
-      #    base #=> Physician
-      #    associations #=> []
-      #    joins #=>  [#<Arel::Nodes::InnerJoin: ...]
+      #    base # => Physician
+      #    associations # => []
+      #    joins # =>  [#<Arel::Nodes::InnerJoin: ...]
       #
       #  However if I execute `Physician.joins(:appointments).to_a` then
-      #    base #=> Physician
-      #    associations #=> [:appointments]
-      #    joins #=>  []
+      #    base # => Physician
+      #    associations # => [:appointments]
+      #    joins # =>  []
       #
       def initialize(base, associations, joins)
         @alias_tracker = AliasTracker.new(base.connection, joins)