docs: fix typos (#480)

CHANGELOG.md

@@ -52,7 +52,7 @@
 
 ### Bug Fixes
 
-* **CDNjs:** bump version to fix version missmatch with CDNjs ([#452](https://github.com/showdownjs/showdown/issues/452))
+* **CDNjs:** bump version to fix version mismatch with CDNjs ([#452](https://github.com/showdownjs/showdown/issues/452))
 
 
 <a name="1.8.0"></a>
@@ -178,7 +178,7 @@ list output may differ.
 
 ### Bug Fixes
 
-* **html-comments:** changed regex to precent malformed long comment to freeze showdown ([3efcd10](https://github.com/showdownjs/showdown/commit/3efcd10)), closes [#439](https://github.com/showdownjs/showdown/issues/439)
+* **html-comments:** changed regex to prevent malformed long comment to freeze showdown ([3efcd10](https://github.com/showdownjs/showdown/commit/3efcd10)), closes [#439](https://github.com/showdownjs/showdown/issues/439)
 
 
 
@@ -223,7 +223,7 @@ list output may differ.
 
 * **githubMentions:** githubMentions now works with openLinksInNewWindow options ([1194d88](https://github.com/showdownjs/showdown/commit/1194d88)), closes [#403](https://github.com/showdownjs/showdown/issues/403)
 * **lists:** fix multi paragraph lists with sublists ([a2259c0](https://github.com/showdownjs/showdown/commit/a2259c0)), closes [#397](https://github.com/showdownjs/showdown/issues/397)
-* **tablesHeaderId:** fix missmatch of option name ([51e4693](https://github.com/showdownjs/showdown/commit/51e4693)), closes [#412](https://github.com/showdownjs/showdown/issues/412)
+* **tablesHeaderId:** fix mismatch of option name ([51e4693](https://github.com/showdownjs/showdown/commit/51e4693)), closes [#412](https://github.com/showdownjs/showdown/issues/412)
 
 
 ### Features
@@ -303,7 +303,7 @@ Important HOTFIX
 * **italicsAndBold:** fix inconsistency in italicsAndBold parsing ([a4f05d4](https://github.com/showdownjs/showdown/commit/a4f05d4)), closes [#332](https://github.com/showdownjs/showdown/issues/332)
 * **literalMidWordUnderscores:** fix inconsistent behavior of emphasis and strong with literalMidWordUndescores ([0292ae0](https://github.com/showdownjs/showdown/commit/0292ae0)), closes [#333](https://github.com/showdownjs/showdown/issues/333)
 * **paragraphs:** fix empty lines generating empty paragraphs ([54bf744](https://github.com/showdownjs/showdown/commit/54bf744)), closes [#334](https://github.com/showdownjs/showdown/issues/334)
-* **strikethrough:** fix striketrough being wrongly parsed inside codeSpans ([169cbe8](https://github.com/showdownjs/showdown/commit/169cbe8))
+* **strikethrough:** fix strikethrough being wrongly parsed inside codeSpans ([169cbe8](https://github.com/showdownjs/showdown/commit/169cbe8))
 
 ### Features
 
@@ -318,7 +318,7 @@ Important HOTFIX
 ### Bug Fixes
 
 * **escapeSpecialCharsWithinTagAttributes:** add ~ and = to escaped chars ([bfcc0e4](https://github.com/showdownjs/showdown/commit/bfcc0e4))
-* **strikethrough:** allow escapinging tilde char ([24d47d7](https://github.com/showdownjs/showdown/commit/24d47d7)), closes [#331](https://github.com/showdownjs/showdown/issues/331)
+* **strikethrough:** allow escaping tilde char ([24d47d7](https://github.com/showdownjs/showdown/commit/24d47d7)), closes [#331](https://github.com/showdownjs/showdown/issues/331)
 
 ### Features
 
@@ -411,7 +411,7 @@ This release also improves performance a bit (around 8%)
 ### Bug Fixes
 
 * **listeners:** fix listeners typo ([f0d25b7](https://github.com/showdownjs/showdown/commit/f0d25b7)), closes [#290](https://github.com/showdownjs/showdown/issues/290)
-* **lists:** lines with mutiple dashes being parsed as multilists ([10b3410](https://github.com/showdownjs/showdown/commit/10b3410)), closes [#312](https://github.com/showdownjs/showdown/issues/312)
+* **lists:** lines with multiple dashes being parsed as multilists ([10b3410](https://github.com/showdownjs/showdown/commit/10b3410)), closes [#312](https://github.com/showdownjs/showdown/issues/312)
 * **nbsp:** nbsp are replaced with simple spaces ([6e90f7c](https://github.com/showdownjs/showdown/commit/6e90f7c))
 
 
@@ -454,7 +454,7 @@ This release also improves performance a bit (around 8%)
         * three
     ```
     
-    Before (ouput):
+    Before (output):
     ```html
     <ul>
       <li>one

README.md

@@ -307,7 +307,7 @@ var defaultOptions = showdown.getDefaultOptions();
 
  * **ghCodeBlocks**: (boolean) [default true] Enable support for GFM code block style.
 
- * **tasklists**:(boolean) [default false] Enable support for GFM takslists. Example:
+ * **tasklists**:(boolean) [default false] Enable support for GFM tasklists. Example:
  
    ```md
     - [x] This task is done