use the term Apple Silicon instead of outdated M1

Signed-off-by: onur-ozkan <work@onurozkan.dev>

docs/ANDROID_CROSS_ON_M1_MAC.md

@@ -1,4 +1,4 @@
-## Cross-compiling MM for Android on M1 Mac
+## Cross-compiling MM for Android on Apple Silicon
 
 1. Ensure that your terminal is added to `Developer tools` in MacOS Security & Privacy settings.
 2. The cross-compilation requires Android NDK version 21. Custom brew cask file is located at the root of this repo.

docs/DEV_ENVIRONMENT.md

@@ -61,7 +61,7 @@
    ```
    CC=/usr/local/opt/llvm/bin/clang AR=/usr/local/opt/llvm/bin/llvm-ar wasm-pack test --firefox --headless mm2src/mm2_main
    ```
-    - for OSX users (M1):
+    - for OSX users (Apple Silicon):
    ```
    CC=/opt/homebrew/opt/llvm/bin/clang AR=/opt/homebrew/opt/llvm/bin/llvm-ar wasm-pack test --firefox --headless mm2src/mm2_main
    ```

docs/WASM_BUILD.md

@@ -25,7 +25,7 @@ To build WASM release binary run one of the following commands according to your
    ```
    CC=/usr/local/opt/llvm/bin/clang AR=/usr/local/opt/llvm/bin/llvm-ar wasm-pack build mm2src/mm2_bin_lib --target web --out-dir wasm_build/deps/pkg/
    ```
-- for OSX users (M1):
+- for OSX users (Apple Silicon):
    ```
    CC=/opt/homebrew/opt/llvm/bin/clang AR=/opt/homebrew/opt/llvm/bin/llvm-ar wasm-pack build mm2src/mm2_bin_lib --target web --out-dir wasm_build/deps/pkg/
    ```

mm2src/db_common/src/sqlite.rs

@@ -310,7 +310,7 @@ where
 }
 
 /// As per https://twitter.com/marcan42/status/1494213862970707969, I've noticed significant SQLite performance
-/// difference on M1 Mac and Linux.
+/// difference on Apple Silicon Mac and Linux.
 /// But according to https://phiresky.github.io/blog/2020/sqlite-performance-tuning/, these pragmas should
 /// be safe to use, while giving great speed boost.
 /// With these, Mac and Linux have comparable SQLite performance.