doc: detect the theme CSS paths used in docs.rs

E.g., <https://docs.rs/ayu-20220314-1.61.0-nightly-285fa7ecd.css>

Fixes the theme detection and adaption on docs.rs.

src/r3/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Upgrade `svgbobdoc` to `^0.3.0` to fix build failures in documentation build
+- Improve rustdoc theme detection on docs.rs
 
 ## [0.2.0] - 2022-03-15
 

src/r3/src/common.md

@@ -152,7 +152,7 @@ function initThemeMonitor() {
         document.body.classList.add(currentClassName);
     }
 
-    var match = themeStyle.href.match(/([a-z]+)\.css$/);
+    var match = themeStyle.href.match(/\/([a-z]+)(-[-a-zA-Z0-9.]*)?\.css$/);
     var currentStyle = (match && match[1]) || "light";
     onApplyTheme(currentStyle);
 

src/r3_core/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Upgrade `svgbobdoc` to `^0.3.0` to fix build failures in documentation build
+- Improve rustdoc theme detection on docs.rs
 
 ## 0.1.0 - 2022-03-15
 

src/r3_kernel/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Upgrade `svgbobdoc` to `^0.3.0` to fix build failures in documentation build
+- Improve rustdoc theme detection on docs.rs
 
 ## 0.1.0 - 2022-03-15
 

src/r3_port_arm/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve rustdoc theme detection on docs.rs
+
 ## [0.2.0] - 2022-03-15
 
 ### Changed

src/r3_port_arm_m/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve rustdoc theme detection on docs.rs
+
 ## [0.3.0] - 2022-03-15
 
 ### Changed

src/r3_port_riscv/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Upgrade `svgbobdoc` to `^0.3.0` to fix build failures in documentation build
+- Improve rustdoc theme detection on docs.rs
 
 ## [0.2.0] - 2022-03-15
 

src/r3_port_std/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve rustdoc theme detection on docs.rs
+
 ## [0.2.0] - 2022-03-15
 
 ### Changed

src/r3_portkit/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Fixed
 
 - Upgrade `svgbobdoc` to `^0.3.0` to fix build failures in documentation build
+- Improve rustdoc theme detection on docs.rs
 
 ## [0.2.0] - 2022-03-15
 

src/r3_support_rp2040/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve rustdoc theme detection on docs.rs
+
 ## [0.2.0] - 2022-03-15
 
 ### Changed

src/r3_support_rza1/CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve rustdoc theme detection on docs.rs
+
 ## [0.2.0] - 2022-03-15
 
 ### Changed