Fix typos

config/default.yml

@@ -181,7 +181,7 @@ Bundler/OrderedGems:
   VersionChanged: '0.47'
   TreatCommentsAsGroupSeparators: true
   # By default, "-" and "_" are ignored for order purposes.
-  # This can be overriden by setting this parameter to true.
+  # This can be overridden by setting this parameter to true.
   ConsiderPunctuation: false
   Include:
     - '**/*.gemfile'
@@ -204,7 +204,7 @@ Gemspec/OrderedDependencies:
   VersionAdded: '0.51'
   TreatCommentsAsGroupSeparators: true
   # By default, "-" and "_" are ignored for order purposes.
-  # This can be overriden by setting this parameter to true.
+  # This can be overridden by setting this parameter to true.
   ConsiderPunctuation: false
   Include:
     - '**/*.gemspec'

docs/modules/ROOT/pages/v1_upgrade_notes.adoc

@@ -148,7 +148,7 @@ This section lists all changes (big or small) to the API. It is meant for mainta
 
 _Legacy_: Cops inherit from `Cop::Cop`.
 
-_Current_: Cops inherit from `Cop::Base`. Having a different base class makes the implementation much cleaner and makes it easy to signal which API is being used. `Cop::Cop` inherits from `Cop::Base` and refines some methods for backward compatiblity.
+_Current_: Cops inherit from `Cop::Base`. Having a different base class makes the implementation much cleaner and makes it easy to signal which API is being used. `Cop::Cop` inherits from `Cop::Base` and refines some methods for backward compatibility.
 
 === `add_offense` API
 

lib/rubocop/cop/base.rb

@@ -223,7 +223,7 @@ def excluded_file?(file)
 
       ### Persistence
 
-      # Override if your cop should be called repeatedly for mutliple investigations
+      # Override if your cop should be called repeatedly for multiple investigations
       # Between calls to `on_new_investigation` and `on_investigation_end`,
       # the result of `processed_source` will remain constant.
       # You should invalidate any caches that depend on the current `processed_source`