Feat: Format syntax

Author: mihaigalos

README.md

@@ -31,10 +31,12 @@ to do the heavy lifting and preserve comments within YAML files.
 
 Add to `.pre-commit-config.yaml` in your git repo:
 
+```yaml
     - repo: https://github.com/jumanjihouse/pre-commit-hook-yamlfmt
       rev: 0.2.1  # or other specific tag
       hooks:
           - id: yamlfmt
+```
 
 :bulb: If a pre-commit hook changes a file,
 the hook fails with a warning that files were changed.
@@ -48,26 +50,28 @@ The default settings are:
 - `width`: None (use ruamel default)
 
 Given this input:
-
+```yaml
     foo:
       bar:
         - baz1
         - baz2
-
+```
 The default settings result in this output:
 
+```yaml
     ---
     foo:
         bar:
             - baz1
             - baz2
-
+```
 
 #### Combine with `yamllint`
 
 `yamlfmt` only works with valid YAML files, so
 I recommend to use `yamllint` and `yamlfmt` together.
 
+```yaml
     - repo: https://github.com/adrienverge/yamllint.git
       rev: v1.21.0  # or higher tag
       hooks:
@@ -78,35 +82,39 @@ I recommend to use `yamllint` and `yamlfmt` together.
       rev: 0.2.1  # or other specific tag
       hooks:
           - id: yamlfmt
-
+```
 
 #### Override defaults
 
 Add to `.pre-commit-config.yaml` in your git repo:
 
+```yaml
     - repo: https://github.com/jumanjihouse/pre-commit-hook-yamlfmt
       rev: 0.2.1  # or other specific tag
       hooks:
           - id: yamlfmt
             args: [--mapping, '4', --sequence, '4', --offset, '2', --colons, --width, '150']
-
+```
 
 ### Invoke pre-commit
 
 #### On every commit
 
 If you want to invoke the checks as a git pre-commit hook, run:
 
-    # Run on every commit.
-    pre-commit install
-
+```bash
+# Run on every commit.
+pre-commit install
+```
 
 #### On demand
 
 If you want to run the checks on-demand (outside of git hooks), run:
 
-    # Run on-demand.
-    pre-commit run --all-files
+```bash
+# Run on-demand.
+pre-commit run --all-files
+```
 
 The [test harness](TESTING.md) of this git repo uses this approach.