update figure description safery

src/contents/safety.tsx

@@ -172,7 +172,7 @@ export const Safety: React.FC = () =>{
           <div className="figure-wrapper">
               <figure>
                     <img src="https://static.igem.wiki/teams/5247/photos/biosafety/wiki/bild-2.png" style={{height: "10%"}}/>
-                    <figcaption> <b>PLATZHALTER</b> </figcaption>
+                    <figcaption> <b>Illustration of the introduction of silent mutations leading to the PAM disrupt.</b> </figcaption>
               </figure>
           </div>
           <H4 text="Riboswitch"></H4>
@@ -182,7 +182,7 @@ export const Safety: React.FC = () =>{
           <div className="figure-wrapper">
               <figure>
                     <img src="https://static.igem.wiki/teams/5247/photos/biosafety/wiki/bild-2.png" style={{height: "10%"}}/>
-                    <figcaption> <b>Riboswitch</b> </figcaption>
+                    <figcaption> <b>Illustration of the mechanism of action of the riboswitch</b> </figcaption>
               </figure>
           </div>
           <p>