fix typo

Author: takanory

README.md

@@ -80,7 +80,7 @@ You can specify height and alt text with a semicolon(`;`) after the name of the
 
 ````markdown
 * Big bear nekochan {nekochan}`kuma-nya;2em`
-* Huge hot-sprint nekochan {nekochan}`hot-spring;128px`
+* Huge hot-spring nekochan {nekochan}`hot-spring;128px`
 * Customize alt text for emoji {nekochan}`gohan-taberu;3em;Nekochan eating rice ball`
 
 
@@ -94,7 +94,7 @@ You can specify height and alt text with a semicolon(`;`) after the name of the
 
 ```rst
 * Big bear nekochan :nekochan:`kuma-nya;2em`
-* Huge hot-sprint nekochan :nekochan:`hot-spring;128px`
+* Huge hot-spring nekochan :nekochan:`hot-spring;128px`
 * Customize alt text for emoji :nekochan:`gohan-taberu;3em;Nekochan eating rice ball`