fix: support hyphen word like Long-Term Support

Author: azu

Diff for: README.md

@@ -7,7 +7,6 @@ Write parentheses within parentheses.
 > Ths Object Management Group(OMG) maintains specifications for the Unified Modeling Language(UML).
 
 ## Examples
-
 **OK**:
 
 ```
@@ -19,6 +18,7 @@ JavaScript(JS)
 **NG**:
 
 ```
+LTS（Long-Term Support）
 JS(JavaScript)
 This rule is OSS(Open Source Software)
 これはOSS（Open Source Software）なルールです

Diff for: src/textlint-rule-abbr-within-parentheses.js

@@ -23,7 +23,7 @@ const reporter = function(context) {
                 return;
             }
             const [abbr, startPair, word, endPair] = captureGroups;
-            const actualAbbr = expandWordsToAcronym(word.text.split(/\s/));
+            const actualAbbr = expandWordsToAcronym(word.text.split(/\s-/));
             if (abbr.text === actualAbbr) {
                 const fixed = fixer.replaceTextRange([
                     abbr.index,

Diff for: test/textlint-rule-abbr-within-parentheses-test.js

@@ -12,6 +12,17 @@ tester.run("textlint-rule-abbr-within-parentheses", rule, {
         "JavaScript(JS)"
     ],
     invalid: [
+        {
+            text: "LTS（Long-Term Support）",
+            output: "Long-Term Support（LTS）",
+            errors: [
+                {
+                    message: "Abbreviation should be within parentheses.",
+                    index: 9
+                }
+            ]
+
+        },
         {
             text: "JS(JavaScript)",
             output: "JavaScript(JS)",