Update README.md (#1429)

Fix typo on `editoconfig`.

README.md

@@ -37,7 +37,7 @@ It's also [easy to create your own](#creating-a-reporter).
   (set `insert_final_newline=false` in .editorconfig to disable (see [EditorConfig](#editorconfig) section for more)).
 - `import-ordering`: Imports ordered consistently (see [Custom ktlint EditorConfig properties](#custom-ktlint-specific-editorconfig-properties) for more)
 - `indent`: Indentation formatting - respects `.editorconfig` `indent_size` with no continuation indent (see [EditorConfig](#editorconfig) section for more)
-- `max-line-length`: Ensures that lines do not exceed the given length of `.editoconfig` property `max_line_length` (see [EditorConfig](#editorconfig) section for more). This rule does not apply in a number of situations. For example, in the case a line exceeds the maximum line length due to and comment that disables ktlint rules than that comment is being ignored when validating the length of the line. The `.editorconfig` property `ktlint_ignore_back_ticked_identifier` can be set to ignore identifiers which are enclosed in backticks, which for example is very useful when you want to allow longer names for unit tests.  
+- `max-line-length`: Ensures that lines do not exceed the given length of `.editorconfig` property `max_line_length` (see [EditorConfig](#editorconfig) section for more). This rule does not apply in a number of situations. For example, in the case a line exceeds the maximum line length due to and comment that disables ktlint rules than that comment is being ignored when validating the length of the line. The `.editorconfig` property `ktlint_ignore_back_ticked_identifier` can be set to ignore identifiers which are enclosed in backticks, which for example is very useful when you want to allow longer names for unit tests.  
 - `modifier-order`: Consistent order of modifiers
 - `no-blank-line-before-rbrace`: No blank lines before `}` 
 - `no-consecutive-blank-lines`: No consecutive blank lines