cleanup: remove some repetitive images

src/content/docs/guides/Encryption/omemo.md

@@ -99,7 +99,7 @@ The following three settings are available:
 
 By default, an indicator is displayed in the titlebar when no encryption is being used.
 
-![CProof encwarn](@assets/encwarn-3.png)
+![CProof encwarn](@assets/encwarn.png)
 
 This indicator can be removed using the [/encwarn](/command-reference#encwarn) command.
 
@@ -107,7 +107,7 @@ This indicator can be removed using the [/encwarn](/command-reference#encwarn) c
 /encwarn off
 ```
 
-![CProof encwarn](@assets/encwarnoff-3.png)
+![CProof encwarn](@assets/encwarnoff.png)
 
 Both incoming and outgoing plaintext messages are always preceeded by the '-' character.
 

src/content/docs/guides/Encryption/openpgp.md

@@ -76,7 +76,7 @@ The contact may also end PGP encryption at their end at any time.
 
 By default, an indicator is displayed in the titlebar when no encryption is being used (including [OTR](/guides/otr-message-encryption) and [OMEMO](/guides/omemo-encryption)).
 
-![CProof encwarn](@assets/encwarn-2.png)
+![CProof encwarn](@assets/encwarn.png)
 
 This indicator can be removed using the [/encwarn](/command-reference#encwarn) command.
 
@@ -84,7 +84,7 @@ This indicator can be removed using the [/encwarn](/command-reference#encwarn) c
 /encwarn off
 ```
 
-![CProof encwarnoff](@assets/encwarnoff-2.png)
+![CProof encwarnoff](@assets/encwarnoff.png)
 
 Both incoming and outgoing plaintext messages are always preceded by the '-' character.