Fix syntax highlighting for serious-python README (#55)

* Update README.md

* Update README.md

Author: baseplate-admin

src/serious_python/README.md

@@ -120,7 +120,6 @@ All "pure" Python packages are supported. These are packages that implemented in
 For iOS: packages with native extensions having a [recipe](https://github.com/kivy/kivy-ios/tree/master/kivy_ios/recipes) are supported. To use these packages you need to build a custom Python distributive for iOS (see below).
 
 ## Platform notes
-
 ### Build matrix
 
 The following matrix shows which platform you should build on to target specific platforms:
@@ -131,19 +130,20 @@ The following matrix shows which platform you should build on to target specific
 | Windows            |         |       ✅     |            |  ✅ (WSL)  |      ✅      |     ✅     |
 | Linux              |         |       ✅     |            |     ✅     |              |     ✅     |
 
+
 ### macOS
 
 macOS 10.15 (Catalina) is the minimal supported vesion of macOS.
 
 You have to update your Flutter app's `macos/Podfile` to have this line at the very top:
 
-```
+```ruby
 platform :osx, '10.15'
 ```
 
 Also, make sure `macos/Runner.xcodeproj/project.pbxproj` contains:
 
-```
+```objc
 MACOSX_DEPLOYMENT_TARGET = 10.15;
 ```
 
@@ -184,7 +184,7 @@ Get the full path to `dist` directory by running `realpath dist` command.
 In the terminal where you run `flutter` commands to build your Flet iOS app run the following command to
 store `dist` full path in `SERIOUS_PYTHON_IOS_DIST` environment variable:
 
-```
+```bash
 export SERIOUS_PYTHON_IOS_DIST="<full-path-to-dist-directory>"
 ```
 
@@ -214,35 +214,35 @@ On macOS Android SDK will be located at `$HOME/Library/Android/sdk`.
 
 Install Temurin8 to get JRE 1.8 required by `sdkmanager` tool:
 
-```
+```bash
 brew install --cask temurin8
 export JAVA_HOME=/Library/Java/JavaVirtualMachines/temurin-8.jdk/Contents/Home
 ```
 
 Set the following environment variables:
 
-```
+```bash
 export ANDROID_SDK_ROOT="$HOME/Library/Android/sdk"
 export NDK_VERSION=25.2.9519653
 export SDK_VERSION=android-33
 ```
 
 Add path to `sdkmanager` to `PATH`:
 
-```
+```bash
 export PATH=$ANDROID_SDK_ROOT/tools/bin:$PATH
 ```
 
 Install Android SDK and NDK from https://developer.android.com/ndk/downloads/ or with Android SDK Manager:
 
-```
+```bash
 echo "y" | sdkmanager --install "ndk;$NDK_VERSION" --channel=3
 echo "y" | sdkmanager --install "platforms;$SDK_VERSION"
 ```
 
 Create new Python virtual environment:
 
-```
+```bash
 python3 -m venv .venv
 source .venv/bin/activate
 ```
@@ -277,7 +277,7 @@ $HOME/.python-for-android/dists/serious_python
 
 In the terminal where you run `flutter` commands to build your Flet Android app run the following command to store distributive full path in `SERIOUS_PYTHON_P4A_DIST` environment variable:
 
-```
+```bash
 export SERIOUS_PYTHON_P4A_DIST=$HOME/.python-for-android/dists/serious_python
 ```
 
@@ -319,4 +319,4 @@ dart run serious_python:main package app/src --mobile --verbose
 
 [Flet app](src/serious_python/example/flet_example).
 
-[Run Python app](src/serious_python/example/run_example).
+[Run Python app](src/serious_python/example/run_example).