docs: Remove trailing blank line from all code blocks

Author: seanbright

docs/Asterisk-Community/IRC.md

@@ -12,19 +12,16 @@ Use <https://libera.chat/> IRC server to connect with Asterisk developers and us
 
 ```bash title=" " linenums="1"
 #asterisk 
-
 ```
 
 ### Asterisk Developers Room
 
 ```bash title=" " linenums="1"
 #asterisk-dev 
-
 ```
 
 ### Asterisk ARI/Application Developers Room
 
 ```bash title=" " linenums="1"
 #asterisk-ari
-
 ```

docs/Configuration/Applications/Answer-Playback-and-Hangup-Applications.md

@@ -17,22 +17,19 @@ To avoid the first few milliseconds of a prompt from being cut off you can play
 
 ```conf title=" " linenums="1"
 exten => 1234,1,Playback(hello-world)
-
 ```
 
 You could avoid the first few seconds of the prompt from being cut off by playing the silence/1 file:
 
 ```conf title=" " linenums="1"
 exten => 1234,1,Playback(silence/1)
 exten => 1234,n,Playback(hello-world)
-
 ```
 
 Alternatively this could all be done on the same line by separating the filenames with an ampersand (&):
 
 ```conf title=" " linenums="1"
 exten => 1234,1,Playback(silence/1&hello-world)
-
 ```
 
 The **Hangup()** application hangs up the current call. While not strictly necessary due to auto-fallthrough (see the note on Priority numbers above), in general we recommend you add the **Hangup()** application as the last priority in any extension.
@@ -43,5 +40,4 @@ Now let's put **Answer()**, **Playback()**, and **Hangup()** together to play a
 exten => 6000,1,Answer(500)
 exten => 6000,n,Playback(hello-world)
 exten => 6000,n,Hangup()
-
 ```