bootstrap: fix typo in Ubuntu's cmake install command

Author: calcmogul

bootstrap/index.html

@@ -154,7 +154,7 @@ <h3>Formatter</h3>
     <pre>
 sudo apt-get install clang-format python3-pip
 pip3 install --user wpiformat</pre>
-    <h3>CMake</h3><code>sudo apt-get cmake</code>
+    <h3>CMake</h3><code>sudo apt-get install cmake</code>
     <h2 id="Tools_installation_on_Arch_Linux">Tools installation on Arch
     Linux</h2>
     <h3>Visual Studio Code</h3>Follow the installation guide from <a href=