Apply hugovk's edits

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: hoodmane

peps/pep-0783.rst

@@ -16,7 +16,7 @@ Abstract
 This PEP proposes a new platform tag series ``pyodide`` for binary Python package
 distributions for the Pyodide Python runtime.
 
-`Emscripten <https://emscripten.org/>`__ is a complete open source compiler
+`Emscripten <https://emscripten.org/>`__ is a complete open-source compiler
 toolchain. It compiles C/C++ code into WebAssembly/JavaScript executables, for
 use in JavaScript runtimes, including browsers and Node.js. The Rust language
 also maintains an Emscripten target. :pep:`776` specifies Python's support for
@@ -161,24 +161,25 @@ Package Indexes
 ---------------
 
 Package indexes SHOULD accept any wheel whose platform tag matches
-``pyodide_[0-9]+_[0-9]+_wasm32``.
+the regular expression ``pyodide_[0-9]+_[0-9]+_wasm32``.
 
 
 Dependency Specifier Markers
 ----------------------------
 
 According to :pep:`776#platform-identification`, in Emscripten Python
 ``sys.platform`` returns ``"emscripten"``. To check for the Emscripten platform in a
-dependency specifier, one can use ``sys_platform == 'emscripten'`` (or its
+dependency specifier, one can use ``sys_platform == "emscripten"`` (or its
 negation).
 
 
 Trove Classifier
 ----------------
 
 Packages that build and test Emscripten wheels can declare this by adding the
-``Environment :: WebAssembly :: Emscripten``. PyPI already accepts uploads of
-packages with this classifier.
+``Environment :: WebAssembly :: Emscripten`` classifier. PyPI already accepts uploads of
+`packages with this classifier
+<https://pypi.org/search/?q=&o=&c=Environment+%3A%3A+WebAssembly+%3A%3A+Emscripten>`__.
 
 
 Backwards Compatibility