Changes from tariq's feedback

Fixed xref alternate text etc.

Author: wmat

src/zc.adoc

@@ -973,7 +973,7 @@ This instruction takes the one's complement of _rd'/rs1'_ and writes the result
 
 [NOTE]
 ====
-  _rd'/rs1'_ is from the standard 8-register set x8-x15.
+rd'/rs1' is from the standard 8-register set x8-x15.
 ====
 
 Prerequisites:
@@ -1410,7 +1410,7 @@ addi sp, sp, 64;
 
 
 <<<
-[#insns-cm_push,reftext="Create stack frame: push registers, allocate additional stack space."]
+[#insns-cm_push,reftext="cm.push"]
 ==== cm.push
 
 Synopsis:
@@ -1605,7 +1605,7 @@ sp-=stack_adj;
 ----
 
 <<<
-[#insns-cm_pop,reftext="Pop registers, deallocate stack frame."]
+[#insns-cm_pop,reftext="cm.pop"]
 ==== cm.pop
 
 Synopsis:
@@ -1799,7 +1799,7 @@ sp+=stack_adj;
 ----
 
 <<<
-[#insns-cm_popretz,reftext="Pop registers, deallocate stack frame, return zero."]
+[#insns-cm_popretz,reftext="cm.popretz"]
 ==== cm.popretz
 
 Synopsis:
@@ -1997,7 +1997,7 @@ asm("ret");
 ----
 
 <<<
-[#insns-cm_popret,reftext="Pop registers, deallocate stack frame, return."]
+[#insns-cm_popret,reftext="cm.popret"]
 ==== cm.popret
 
 Synopsis: