planed ==> planned

Author: ydah

en/news/_posts/2018-12-06-ruby-2-6-0-rc1-released.md

@@ -93,7 +93,7 @@ This module has `parse` method which parses a given ruby code of string and retu
 
 * Passing `safe_level` to `ERB.new` is deprecated. `trim_mode` and `eoutvar` arguments are changed to keyword arguments. [[Feature #14256]](https://bugs.ruby-lang.org/issues/14256)
 
-* Supported Unicode version is updated to 11. It is planed to update 12 and 12.1 in future TEENY releases of Ruby 2.6.
+* Supported Unicode version is updated to 11. It is planned to update 12 and 12.1 in future TEENY releases of Ruby 2.6.
 
 * Merge RubyGems 3.0.0.beta3. `--ri` and `--rdoc` options was removed. Please use `--document` and `--no-document` options instead of them.