docs:update readme and GFX Library manual.

Author: xcjk-tofuture

README.md

@@ -37,7 +37,7 @@ To simplify the hardware setup, we provide an online tool that helps you quickly
   - ED103TC2-based displays
   - T133A01-based displays
   - JD79667_based displays
-> Note: When using a large-sized screen, please make sure to enable the PSRAM option in time. Otherwise, you will receive a prompt indicating a memory error! 
+> Note: When using a large-sized screen(larger than or equal to 10.3inch), please make sure to enable the PSRAM option in time. Otherwise, you will receive a prompt indicating a memory error! 
 ## E-Paper Implementation
 
 The library includes a comprehensive implementation for E-Paper displays, providing:

index.html

@@ -453,7 +453,8 @@ <h2 data-lang-key="step2_title">Step 2: (ePaper Only) Select Your Driver Board T
 
         <h2 data-lang-key="step3_title">Final step: Copy the Generated Code</h2>
         <p class="final-instruction" data-lang-key="final_step_instruction"></p>
-        <img src="thumbprint.png" alt="Instructional image" class="final-instruction-img">
+        <img src="thumbprint_step1.png" alt="Instructional image" class="final-instruction-img">
+        <img src="thumbprint_step2.png" alt="Instructional image" class="final-instruction-img">
         <div class="code-container">
             <pre><code id="outputCode"></code></pre>
             <button id="copyButton" class="copy-btn" onclick="copyToClipboard()" title="Copy Code">