WiFiC3: update readme

Co-authored-by: per1234 <[email protected]>

Author: facchinm

libraries/WiFi/extra/README.md

@@ -1,12 +1,12 @@
-# Build scripr for esp-hosted (Portenta C33)
+# Build script for esp-hosted (Portenta C33)
 
 ```
-git clone git@github.com:espressif/esp-hosted.git --recursive
+git clone https://github.com/espressif/esp-hosted.git --recursive
 cd esp-hosted/
 patch -p1 < ../0001-Defaults-for-C33-BLE.patch
 cd esp_hosted_fg/esp/esp_driver/
 ./esp-idf/install.sh esp32s3
-. esp-idf/export.sh
+. ./esp-idf/export.sh
 cd network_adapter/
 idf.py set-target esp32c3
 cp ../../../../../sdkconfig.default.c33 sdkconfig