Updated SC2149 (markdown)

SC2149.md

@@ -4,7 +4,7 @@ _Note: Removed in [v0.5.0 - 2018-06-01](https://github.com/koalaman/shellcheck/c
 
 ### Problematic code:
 
-```sh
+```bash
 # Regular array
 index=42
 echo $((array[$index]))
@@ -12,7 +12,7 @@ echo $((array[$index]))
 
 or
 
-```sh
+```bash
 # Associative array
 index=banana
 echo $((array[$index]))
@@ -20,7 +20,7 @@ echo $((array[$index]))
 
 ### Correct code:
 
-```
+```bash
 # Regular array
 index=42
 echo $((array[index]))
@@ -28,7 +28,7 @@ echo $((array[index]))
 
 or
 
-```sh
+```bash
 # Associative array
 index=banana
 echo $((array[\$index]))
@@ -40,7 +40,7 @@ For a numerically indexed array, the `$` is mostly pointless and can be removed
 
 For associative arrays, the `$` should be escaped to avoid accidental dereferencing:
 
-```sh
+```bash
 declare -A array
 index='$1'
 array[$index]=42