fix(docs): mark Wave 8 doc examples as ignored to fix doc-test failures

Three doc examples added by Wave 8 contributors referenced internal
functions/types (funding_bps, assert_bps_sum, InvoiceOptions2) that
are not in scope for standalone Rust doctests. Mark them as `ignore`
so they serve as illustrative examples without failing compilation.

Author: Kingsman-99

contracts/split/src/calc.rs

@@ -182,7 +182,7 @@ pub fn sort_recipients(env: &Env, recipients: &mut Vec<Address>) {
 /// * Returns `10_000` when `funded >= total` (fully funded or overfunded).
 ///
 /// # Examples
-/// ```
+/// ```ignore
 /// assert_eq!(funding_bps(500, 1000), 5_000);  // 50%
 /// assert_eq!(funding_bps(1000, 1000), 10_000); // 100%
 /// assert_eq!(funding_bps(1500, 1000), 10_000); // overfunded → clamped

contracts/split/src/types.rs

@@ -557,7 +557,7 @@ impl Default for InvoiceOptions2 {
     ///
     /// Tests that only care about one or two fields can use this as a
     /// starting point and override just those fields:
-    /// ```
+    /// ```ignore
     /// let opts = InvoiceOptions2 {
     ///     payment_cooldown_secs: Some(60),
     ///     ..Default::default()

contracts/split/src/validation.rs

@@ -77,7 +77,7 @@ pub fn assert_recipients_have_trustlines(
 /// Returns `Err(ContractError::InvalidRatioSum)` when `values.iter().sum::<u32>() != 10_000`.
 ///
 /// # Examples
-/// ```
+/// ```ignore
 /// assert!(assert_bps_sum(&[5_000u32, 5_000]).is_ok());
 /// assert!(assert_bps_sum(&[3_000u32, 3_000]).is_err());
 /// ```