Fix typos and incorrect URLs in README file

README.md

@@ -9,8 +9,8 @@
 <p align="center">
     <a href="https://github.com/crystal-linux/iso"><img src="https://github.com/crystal-linux/iso/actions/workflows/build.yml/badge.svg"></a><br>
     <a href="https://github.com/crystal-linux/.github/blob/main/LICENSE"><img src="https://img.shields.io/badge/License-GPL--3.0-blue.svg" alt="License">
-    <a href="https://github/crystal-linux/iso"><img alt="GitHub isses" src="https://img.shields.io/github/issues-raw/crystal-linux/iso"></a>
-    <a href="https://github/crystal-linux/iso"><img alt="GitHub pull requests" src="https://img.shields.io/github/issues-pr-raw/crystal-linux/iso"></a><br>
+    <a href="https://github.com/crystal-linux/iso/issues"><img alt="GitHub issues" src="https://img.shields.io/github/issues-raw/crystal-linux/iso"></a>
+    <a href="https://github.com/crystal-linux/iso/pulls"><img alt="GitHub pull requests" src="https://img.shields.io/github/issues-pr-raw/crystal-linux/iso"></a><br>
     <a href="https://discord.gg/hYJgu8K5aA"><img alt="Discord" src="https://img.shields.io/discord/825473796227858482?color=blue&label=Discord&logo=Discord&logoColor=white"> </a>
     <a href="https://github.com/axtloss"><img src="https://img.shields.io/badge/Maintainer-@axtloss-brightgreen" alt="The maintainer of this repository" href="https://github.com/axtloss"></a>
     <br>