fix readme

readme.md

@@ -190,6 +190,7 @@ Gitea Actions	CI/CD
 
 Authentication is based on a personal access code assigned to each guest.
 
+```
 Guest
   │
   │ 6-digit code
@@ -206,6 +207,7 @@ POST /api/auth
           │
           ▼
       Authenticated
+```
 
 The JWT is stored in a cookie and used for subsequent API requests.
 
@@ -277,7 +279,7 @@ The table contains:
 * administrator privileges.
 
 The database layer uses an asynchronous stack:
-
+```
 FastAPI
    │
    ▼
@@ -288,7 +290,7 @@ aiosqlite
    │
    ▼
 SQLite
-
+```
 Database schema changes are managed using Alembic.
 
 ⸻
@@ -340,7 +342,7 @@ pip install -r requirements.txt
 4. Environment Variables
 
 Create a .env file in the project root.
-
+```
 Example:
 
 DIR=/path/to/project
@@ -348,7 +350,7 @@ PORT=8000
 SECRET_KEY=change-me
 ALGORITHM=HS256
 ACCESS_TOKEN_EXPIRE_SECONDS=3600
-
+```
 You can use env_example as a reference when configuring the environment.
 
 ⚠️ Never commit a real SECRET_KEY to Git.
@@ -455,7 +457,7 @@ make help
 🔄 CI/CD
 
 The project uses Gitea Actions for automation.
-
+```
 The general workflow:
 
               git push
@@ -477,13 +479,13 @@ The general workflow:
                             │
                             ▼
                        Production
-
+```
 The workflow builds the Docker image and performs deployment to the target environment.
 
 ⸻
 
 🌐 Production
-
+```
 The production infrastructure consists of:
 
 Internet
@@ -497,7 +499,7 @@ Internet
     │
     ▼
  SQLite
-
+```
 Caddy acts as a reverse proxy and handles external HTTP/HTTPS traffic.
 
 Ansible is used to automate deployment and server configuration.
@@ -534,7 +536,7 @@ JavaScript is responsible for:
 ⸻
 
 🧪 Development
-
+```
 Recommended development workflow:
 
 Feature branch
@@ -556,7 +558,7 @@ Build
       │
       ▼
 Deploy
-
+```
 Before pushing changes, it is recommended to run:
 
 python -m compileall .
@@ -600,7 +602,7 @@ Possible future improvements:
 ⸻
 
 📊 Project
-
+```
 Main languages used in the project:
 
 HTML        ████████████████████  40.5%
@@ -610,7 +612,7 @@ JavaScript  ████                   7.6%
 Makefile    ▏                      0.7%
 
 The statistics are based on the current state of the repository.
-
+```
 ⸻
 
 📄 License