Update rvv-intrinsics.bib

Updating link to vector file

Signed-off-by: Kersten Richter <[email protected]>

doc/rvv-intrinsics.bib

@@ -5,7 +5,7 @@ @misc{riscv-asm-manual
 
 @misc{riscv-v-spec,
   title = {{RISC-V "V" Vector Extension}},
-  howpublished = {\url{https://github.com/riscv/riscv-v-spec/blob/master/v-spec.adoc}}
+  howpublished = {\url{https://github.com/riscv/riscv-isa-manual/blob/main/src/v-st-ext.adoc}}
 }
 
 @misc{riscv-c-api,