Update README.md after #1166. NFC
diff --git a/README.md b/README.md
index 33c7c60..6bb29d6 100644
--- a/README.md
+++ b/README.md
@@ -136,11 +136,11 @@
 When you run `emsdk list`, it will group the Tools and SDKs under these two
 categories.
 
-To obtain and build latest upstream wasm SDK from source, run
+To obtain and build latest wasm SDK from source, run
 
 ```
-emsdk install sdk-upstream-main-64bit
-emsdk activate sdk-upstream-main-64bit
+emsdk install sdk-main-64bit
+emsdk activate sdk-main-64bit
 ```
 
 You can use this target for example to bootstrap developing patches to LLVM,
@@ -156,7 +156,7 @@
 ### When working on git branches compiled from source, how do I update to a newer compiler version?
 
 Unlike tags and precompiled versions, a few of the SDK packages are based on
-"moving" git branches and compiled from source (e.g. sdk-upstream-main,
+"moving" git branches and compiled from source (e.g. sdk-main,
 sdk-main, emscripten-main, binaryen-main). Because of that, the
 compiled versions will eventually go out of date as new commits are introduced
 to the development branches. To update an old compiled installation of one of
@@ -198,11 +198,11 @@
 obtain new features and latest fixes immediately as they are pushed to the
 github repository, without having to wait for release to be tagged. You do not
 need a github account or a fork of Emscripten to do this. To switch to using the
-latest upstream git development branch `main`, run the following:
+latest git development branch `main`, run the following:
 
     emsdk install git-1.9.4 # Install git. Skip if the system already has it.
-    emsdk install sdk-upstream-main-64bit # Clone+pull the latest emscripten-core/emscripten/main.
-    emsdk activate sdk-upstream-main-64bit # Set the main SDK as the currently active one.
+    emsdk install sdk-main-64bit # Clone+pull the latest emscripten-core/emscripten/main.
+    emsdk activate sdk-main-64bit # Set the main SDK as the currently active one.
 
 ### How do I use my own Emscripten github fork with the SDK?