Update memory.md

Author: JamesH65

configuration/config-txt/memory.md

@@ -1,26 +1,26 @@
-## Memory options in config.txt
+# Memory options in config.txt
 
-### gpu_mem
+## gpu_mem
 
 GPU memory in megabytes. This sets the memory split between the CPU and GPU; the CPU gets the remaining memory. Minimum value is `16`; maximum value is `192`, `448`, or `944`, depending on whether you are using a 256M, 512MB, or 1024MB Pi. The default value is `64`.
 
 Setting `gpu_mem` to low values may automatically disable certain firmware features, as there are some things the GPU cannot do if it has access to too little memory. So if a feature you are trying to use isn't working, try setting a larger GPU memory split.
 
 Using `gpu_mem_256`, `gpu_mem_512`, and `gpu_mem_1024` allows you to swap the same SD card between 256MB, 512MB, and 1024MB Pis without having to edit `config.txt` each time:
 
-### gpu_mem_256
+## gpu_mem_256
 
 The `gpu_mem_256` command sets the GPU memory in megabytes for the 256MB Raspberry Pi (it is ignored if memory size is not 256MB). This overrides `gpu_mem`. The maximum value is `192` and the default is not set.
 
-### gpu_mem_512
+## gpu_mem_512
 
 The `gpu_mem_512` command sets the GPU memory in megabytes for the 512MB Raspberry Pi (it is ignored if memory size is not 512MB). This overrides `gpu_mem`. The maximum value is `448` and the default is not set.
 
-### gpu_mem_1024
+## gpu_mem_1024
 
 The `gpu_mem_1024` command sets the GPU memory in megabytes for the 1024MB Raspberry Pi 2 (it is ignored if memory size is not 1024MB). This overrides `gpu_mem`. The maximum value is `944` and the default is not set.
 
-### disable_l2cache
+## disable_l2cache
 
 Setting this to `1` disables the CPU's access to the GPU's L2 cache, and requires a corresponding L2 disabled kernel. Default value is `0`.