Use three backticks for code blocks in README.

Author: razor-x

README.md

@@ -21,38 +21,38 @@ You must be in a tmux session to install.
 
 You can install this via the command-line with either curl
 
-````bash
+```bash
 curl -L https://io.evansosenko.com/tmuxrc/install.sh | sh
-````
+```
 
 or wget
 
-````bash
+```bash
 wget https://io.evansosenko.com/tmuxrc/install.sh -O - | sh
-````
+```
 
 ### Manual Install
 
 1. Install [Tmux Plugin Manager].
 2. Create `~/.tmux.conf` with
 
-````tmux
+```tmux
 # razor-x/tmuxrc
 
 if-shell "test -f ~/.tmux/plugins/tmuxrc/plugins.conf" "source ~/.tmux/plugins/tmuxrc/plugins.conf"
 if-shell "test ! -f ~/.tmux/plugins/tmuxrc/plugins.conf" "set -g @tpm_plugins 'tmux-plugins/tpm razor-x/tmuxrc'"
 run-shell '~/.tmux/plugins/tpm/tpm'
 if-shell "test -f ~/.tmuxline.conf" "source ~/.tmuxline.conf"
-````
+```
 
 and run this to install
 
-````bash
+```bash
 ~/.tmux/plugins/tpm/scripts/install_plugins.sh
 ~/.tmux/plugins/tpm/scripts/update_plugin.sh
 ~/.tmux/plugins/tpm/scripts/install_plugins.sh
 ~/.tmux/plugins/tpm/scripts/update_plugin.sh
-````
+```
 
 ## Updating
 
@@ -79,9 +79,9 @@ You can customize this configuration or manage your own in the same way.
 
 Here is an example of a command you can use to make replacements:
 
-````bash
+```bash
 git ls-files -z | xargs -0 sed -i 's/razor-x\/tmuxrc/username\/tmuxrc/g'
-````
+```
 
 ## Contributing