doc: added playstation vita to summary

Author: AMG

src/doc/rustc/src/SUMMARY.md

@@ -14,6 +14,7 @@
 - [Tests](tests/index.md)
 - [Platform Support](platform-support.md)
     - [aarch64-apple-ios-sim](platform-support/aarch64-apple-ios-sim.md)
+    - [armv7-sony-vita-eabihf](platform-support/armv7-sony-vita-eabihf.md)
     - [\*-kmc-solid_\*](platform-support/kmc-solid.md)
     - [x86_64-unknown-none](platform-support/x86_64-unknown-none.md)
 - [Target Tier Policy](target-tier-policy.md)

src/doc/rustc/src/platform-support/armv7-sony-vita-eabihf.md

@@ -37,7 +37,7 @@ Currently there is no support to run the rustc test suite for this target.
 
 To test your developed rust programs for PlayStation Vita, first you have to prepare a proper executable for the device using the resulting ELF file you get from compilation step. The needed steps can be automated using tools like `cargo-make`. Use the example below as a template for your project:
 
-```
+```toml
 [env]
 TITLE = "Rust Hello World"
 TITLEID = "RUST00001"