fix: clarify installer fallback instructions

Author: BrainBuzzer

install.sh

@@ -10,12 +10,10 @@ fi
 
 if ! command -v cargo >/dev/null 2>&1; then
   echo "Homebrew is not available and Rust/Cargo was not found."
-  echo "Install Homebrew or Rust first, or run:"
-  echo "  curl -fsSL https://raw.githubusercontent.com/BrainBuzzer/semantic-explorer/main/README.md"
+  echo "Install Homebrew or Rust first, or use one of the alternate methods in README.md."
   exit 1
 fi
 
 echo "Homebrew is not available. Falling back to cargo install."
 cargo install --git https://github.com/BrainBuzzer/semantic-explorer.git --locked --force
 echo "Installed sx using cargo."
-