Fixed broken stegbrute URL and minor typos

aperisolve/templates/faq.html

@@ -6,8 +6,8 @@
   <div>
     <div>
       This cheatsheet is intended to guide CTF players in their research. This cheatsheet is not representative of
-      modern steganography/seganalysis techniques, and its content does not match with the creation of an interesting
-      challenges 😉.
+      modern steganography/steganalysis techniques, and its content does not match with the creation of an interesting
+      challenge 😉.
     </div>
   </div>
   <h2>Check file type / metadata</h2>
@@ -48,7 +48,7 @@
       <ul class="fa-ul">
         <li>Verify the checksums of the file. These are usually CRC32, some tools like <a
             href='http://www.libpng.org/pub/png/apps/pngcheck.html' target='_blank' class='highlight'>PngCheck</a> or <a
-            href='https://github.com/sherlly/PCRT' target='_blank' class='highlight'>PCRT</a> are usefull to verify and
+            href='https://github.com/sherlly/PCRT' target='_blank' class='highlight'>PCRT</a> are useful to verify and
           correct these checksums.</li>
       </ul>
       <div class="command">