combine gtdb and user data

Author: yazhinia

generate_customdatabase.md

@@ -233,13 +233,13 @@ The script takes three inputs in this specific order:
     38222_27_bin.4	d__Bacteria;p__Bacillota;c__Bacilli;o__Lactobacillales;f__Streptococcaceae;g__Streptococcus;s__
 
 3. **Membership file** — the complete representative list from your `magmax customdb` output
-   
+   ```
     Example:`memberships.tsv`
     #representative	member_genomes
     38222_26_bin.5	
     38222_27_bin.1	38510_111_bin.22,38510_42_bin.1,39907_150_bin.19,39923_2#63_bin.6,47680_139_bin.10,47681_116_bin.15
     38222_27_bin.4	38354_3_bin.7,38354_18_bin.10,38510_115_bin.7,38510_4_bin.3
-
+    ```
 
 ### Output