Merge pull request #1327 from fermyon/tpmccallum-patch-17

Update from version 14 to version 20

content/wasm-languages/c-lang.md

@@ -72,14 +72,14 @@ Since it supports the WASI specification, C can be used on the Fermyon Platform
 The first step is to install the WASI SDK. If you use this broadly, it may be a good idea to install it in a common location. For our example, though, we will create a project and install the SDK inside of that project.
 
 You can download the latest version from the [WASI releases page](https://github.com/WebAssembly/wasi-sdk/releases).
-At the time of this writing, the latest version is `14.0`. Here's a command line example for a Mac:
+At the time of this writing, the latest version is `20.0`:
 
 ```console
-$ curl -O -sSL https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-14/wasi-sdk-14.0-macos.tar.gz
-$ tar xf wasi-sdk-14.0-macos.tar.gz
+$ curl -O -sSL https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-20/wasi-sdk-20.0-linux.tar.gz
+$ tar -xzf wasi-sdk-20.0-linux.tar.gz
 ```
 
-Now we can write a simple C program using WASI. Here is the text ouf `hello.c`:
+Now we can write a simple C program using WASI. Here is the text of our `hello.c` file:
 
 ```c
 #include <stdio.h>
@@ -94,10 +94,10 @@ int main() {
 To compile this, we will use the `clang` that comes with the WASI SDK.
 
 ```console
-./wasi-sdk-14.0/bin/clang --sysroot wasi-sdk-14.0/share/wasi-sysroot/ hello.c -o hello.wasm
+$ ./wasi-sdk-20.0/bin/clang --sysroot wasi-sdk-20.0/share/wasi-sysroot/ hello.c -o hello.wasm
 ```
 
->> Newer versions of Clang may only need the command `clang --target=wasm32-wasi --sysroot=wasi-sdk-14.0/share/wasi-sysroot/  hello.c -o hello.wasm`
+>> Newer versions of Clang may only need the command `clang --target=wasm32-wasi --sysroot=wasi-sdk-20.0/share/wasi-sysroot/  hello.c -o hello.wasm`
 
 The above should produce a file named `hello.wasm`. We can execute that with Wasmtime:
 
@@ -167,4 +167,4 @@ Here are some great resources:
 - Mozilla has a tutorial on [Compiling C/C++ to Wasm with Emscripten](https://developer.mozilla.org/en-US/docs/WebAssembly/C_to_wasm)
 - The [yo-wasm](https://github.com/deislabs/yo-wasm) tool can help you get started faster. (Yes, we built `yo-wasm`.)
 - Here's an example of a [Wagi fileserver written in C](https://github.com/deislabs/wagi-fileserver-c)
-- If you want to work directly with the [Wasi libc](https://github.com/WebAssembly/wasi-libc), you can do that, too. 
+- If you want to work directly with the [Wasi libc](https://github.com/WebAssembly/wasi-libc), you can do that, too.