Update blockdestabilize removed invalid mechanic "fallingblock" subbed for "blockdestabilize" I was probably tired T_T

skills/mechanics/blockdestabilize.md

@@ -8,5 +8,5 @@ Examples
 --------
 ```yml
 Skills:
-  - fallingBlock @BNO{r=5}
+  - blockdestabilize @BNO{r=5}
 ```
\ No newline at end of file