fix syntax errors

Snakefile

@@ -319,7 +319,7 @@ rule usable_basenum:
 
 ## fastqc
 
-rule fastqc_raw
+rule fastqc_raw:
     input:
         r1=get_r1,
         r2=get_r2
@@ -331,7 +331,7 @@ rule fastqc_raw
     shell: "fastqc -o {params.odir} {input.r1} {input.r2} && echo 'done' > {output.aux}"
 
 
-rule fastqc_merged
+rule fastqc_merged:
     input:
         r1=out_path("{sample}/pre_process/{sample}.merged_R1.fastq.gz"),
         r2=out_path("{sample}/pre_process/{sample}.merged_R2.fastq.gz")
@@ -343,7 +343,7 @@ rule fastqc_merged
     shell: "fastqc -o {params.odir} {input.r1} {input.r2} && echo 'done' > {output.aux}"
 
 
-rule fastqc_postqc
+rule fastqc_postqc:
     input:
         r1=out_path("{sample}/pre_process/{sample}.cutadapt_R1.fastq"),
         r2=out_path("{sample}/pre_process/{sample}.cutadapt_R2.fastq")