docs: update gas fee strategy examples to remove data_size_limit parameters

Remove obsolete data_size_limit parameters from all gas fee strategy function calls in documentation and examples, following the recent API changes.

Changes:
- Update README.md and README_CN.md gas fee strategy examples
- Update all example files using set_global_fee_strategy (from 8 params to 6 params)
- Update gas_fee_strategy example for set_normal_fee_strategy and set_high_low_fee_strategy
- Remove the last two parameters (256 * 1024, 0) from all calls

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

examples/gas_fee_strategy/src/main.rs

@@ -12,7 +12,7 @@ async fn main() {
 
     // Set global strategy
     println!("1. Set global strategy");
-    gas_fee_strategy.set_global_fee_strategy(150000,150000, 500000,500000, 0.001, 0.001, 256 * 1024, 0);
+    gas_fee_strategy.set_global_fee_strategy(150000, 150000, 500000, 500000, 0.001, 0.001);
 
     // Print all strategies
     println!("\n2. Print all strategies");
@@ -30,8 +30,6 @@ async fn main() {
         500000, // cu_price
         0.0,    // buy_tip
         0.0,    // sell_tip
-        256 * 1024,
-        0,
     );
 
     // Add high-low fee strategy for SwqosType::Jito on Buy
@@ -44,7 +42,6 @@ async fn main() {
         10 * 1_000_000, // high cu_price
         0.001,          // low tip
         0.1,            // high tip
-        0,
     );
 
     // Print all strategies
@@ -59,8 +56,6 @@ async fn main() {
         500000, // cu_price
         0.0001, // buy_tip
         0.0001, // sell_tip
-        256 * 1024,
-        0,
     );
 
     // Print all strategies