Merge pull request #3345 from metabase/fix_block_quotes

fix block quotes

docs/developers-guide-osx.md

@@ -10,7 +10,7 @@ NOTE: These instructions are only for packaging a built Metabase uberjar into `M
 
 3.  Update Perl. I'm not sure these steps are actually needed, so feel free to try skipping it and come back to it if it fails:
   
-   ```bash
+```bash
    # Upgrade Perl
    brew install perl
    
@@ -22,11 +22,11 @@ NOTE: These instructions are only for packaging a built Metabase uberjar into `M
    # Double-check that we're using the newer version of CPAN
    # (If this is your first time running CPAN, use the default config settings when prompted)
    cpan --version # You should see a line like "running under Perl version 5.24.0."
-   ```
+```
 
 4.  Next, you'll need to run the following commands before building the app:
 
-    ```bash
+```bash
    # Fetch and initialize git submodule
    git submodule update --init
    
@@ -46,7 +46,7 @@ NOTE: These instructions are only for packaging a built Metabase uberjar into `M
    
    # Copy JRE and uberjar
    ./bin/osx-setup
-   ```
+```
 
 `./bin/osx-setup` will build run commands to build the uberjar for you if needed.
 Run `./bin/osx-setup` again at any time in the future to copy the latest version of the uberjar into the project.