docs: replace unsupported mermaid mindmap/xychart with markdown tables

README.md

@@ -158,35 +158,17 @@ sequenceDiagram
 
 ### 📊 Supported Entity Types (25 Categories)
 
-```mermaid
-mindmap
-  root((NER Categories))
-    Person
-    Location
-    Organization
-    Government
-    Date
-    Time
-    Money
-    Percentage
-    Facility
-    Product
-    Event
-    Art
-    Law
-    Language
-    Position
-    Nationality
-    Disease
-    Contact
-    Quantity
-    Project
-    Cardinal
-    Ordinal
-    Proverb
-    Miscellaneous
-    Other
-```
+| Category | Category | Category |
+|----------|----------|----------|
+| Person | Government | Law |
+| Location | Date | Language |
+| Organization | Time | Position |
+| Facility | Money | Nationality |
+| Product | Percentage | Disease |
+| Event | Contact | Quantity |
+| Art | Project | Cardinal |
+| Proverb | Ordinal | Miscellaneous |
+| Other | | |
 
 ### 📈 Dataset Information
 - **Source:** [Azerbaijani NER Dataset](https://huggingface.co/datasets/LocalDoc/azerbaijani-ner-dataset)
@@ -197,13 +179,12 @@ mindmap
 
 ## 📊 Model Performance Comparison
 
-```mermaid
-xychart-beta
-    title "Model Performance Comparison (F1-Score)"
-    x-axis [mBERT, XLM-RoBERTa, XLM-RoBERTa-Large, Azeri-Turkish-BERT]
-    y-axis "F1-Score (%)" 65 --> 80
-    bar [67.70, 75.22, 75.48, 73.55]
-```
+| Model | F1-Score |
+|-------|----------|
+| mBERT | 67.70% |
+| XLM-RoBERTa Base | 75.22% |
+| XLM-RoBERTa Large | **75.48%** |
+| Azeri-Turkish-BERT | 73.55% |
 
 ## 📈 Detailed Performance Metrics