Update pico_sdk.md to reflect changes to SPI (#900)

references to solutions in #892 and #899
nRF24 · Mar 11, 2023 · 6ad390f · 6ad390f
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commit 6ad390f
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diff --git a/docs/pico_sdk.md b/docs/pico_sdk.md
@@ -144,6 +144,7 @@ This option is the most reliable and flexible. It involves calling `SPI.begin()`
 #include <RF24.h>
 
 RF24 radio(7, 8); // pin numbers connected to the radio's CE and CSN pins (respectively)
+SPI spi;
 
 int main()
 {