Fix CI yaml syntax documentation [ci skip]

doc/ci/yaml/README.md

@@ -278,26 +278,23 @@ The above script will:
 `artifacts` is used to specify list of files and directories which should be attached to build after success.
 
 1. Send all files in `binaries` and `.config`:
-```
-artifacts:
+
+        artifacts:
           paths:
           - binaries/
           - .config
-```
 
 2. Send all git untracked files:
-```
-artifacts:
+
+        artifacts:
           untracked: true
-```
 
 3. Send all git untracked files and files in `binaries`:
-```
-artifacts:
+
+        artifacts:
           untracked: true
           paths:
           - binaries/
-```
 
 The artifacts will be send after the build success to GitLab and will be accessible in GitLab interface to download.
 
@@ -307,46 +304,41 @@ This feature requires GitLab Runner v0.7.0 or higher.
 `cache` is used to specify list of files and directories which should be cached between builds.
 
 1. Cache all files in `binaries` and `.config`:
-```
-rspec:
+
+        rspec:
           script: test
           cache:
             paths:
             - binaries/
             - .config
-```
 
 2. Cache all git untracked files:
-```
-rspec:
+
+        rspec:
           script: test
           cache:
             untracked: true
-```
             
 3. Cache all git untracked files and files in `binaries`:
-```
-rspec:
+
+        rspec:
           script: test
           cache:
             untracked: true
             paths:
             - binaries/
-```
 
 4. Locally defined cache overwrites globally defined options. This will cache only `binaries/`:
 
-```
-cache:
+        cache:
           paths:
           - my/files
         
-rspec:
+        rspec:
           script: test
           cache:
             paths:
             - binaries/
-```
 
 The cache is provided on best effort basis, so don't expect that cache will be present.
 For implementation details please check GitLab Runner.