Fix name of some syscalls in docs

src/opcode.rs

@@ -1354,7 +1354,7 @@ opcode! {
 // === 5.15 ===
 
 opcode! {
-    /// Make a directory, equivalent to `mkdirat2(2)`.
+    /// Make a directory, equivalent to `mkdirat(2)`.
     pub struct MkDirAt {
         dirfd: { impl sealed::UseFd },
         pathname: { *const libc::c_char },
@@ -1377,7 +1377,7 @@ opcode! {
 }
 
 opcode! {
-    /// Create a symlink, equivalent to `symlinkat2(2)`.
+    /// Create a symlink, equivalent to `symlinkat(2)`.
     pub struct SymlinkAt {
         newdirfd: { impl sealed::UseFd },
         target: { *const libc::c_char },
@@ -1400,7 +1400,7 @@ opcode! {
 }
 
 opcode! {
-    /// Create a hard link, equivalent to `linkat2(2)`.
+    /// Create a hard link, equivalent to `linkat(2)`.
     pub struct LinkAt {
         olddirfd: { impl sealed::UseFd },
         oldpath: { *const libc::c_char },
@@ -1739,10 +1739,10 @@ opcode! {
 opcode! {
     /// Wait on a futex, like but not equivalant to `futex(2)`'s `FUTEX_WAIT_BITSET`.
     ///
-    /// Wait on a futex at address `futex` and which still has the value `val` and with `futex2(2)`
+    /// Wait on a futex at address `futex` and which still has the value `val` and with `futex(2)`
     /// flags of `futex_flags`. `musk` can be set to a specific bitset mask, which will be matched
     /// by the waking side to decide who to wake up. To always get woken, an application may use
-    /// `FUTEX_BITSET_MATCH_ANY` (truncated to futex bits). `futex_flags` follows the `futex2(2)`
+    /// `FUTEX_BITSET_MATCH_ANY` (truncated to futex bits). `futex_flags` follows the `futex(2)`
     /// flags, not the `futex(2)` v1 interface flags. `flags` are currently unused and hence `0`
     /// must be passed.
     #[derive(Debug)]
@@ -1775,7 +1775,7 @@ opcode! {
     /// Wake up waiters on a futex, like but not equivalant to `futex(2)`'s `FUTEX_WAKE_BITSET`.
     ///
     /// Wake any waiters on the futex indicated by `futex` and at most `val` futexes. `futex_flags`
-    /// indicates the `futex2(2)` modifier flags. If a given bitset for who to wake is desired,
+    /// indicates the `futex(2)` modifier flags. If a given bitset for who to wake is desired,
     /// then that must be set in `mask`. Use `FUTEX_BITSET_MATCH_ANY` (truncated to futex bits) to
     /// match any waiter on the given futex. `flags` are currently unused and hence `0` must be
     /// passed.