HDFS-17152. Fix the documentation of count command in FileSystemShell.md. (#5939). Contributed by farmmamba.

Reviewed-by: Shilun Fan <slfan1989@apache.org>
Signed-off-by:  Shuyan Zhang <zhangshuyan@apache.org>

hadoop-common-project/hadoop-common/src/site/markdown/FileSystemShell.md

@@ -137,13 +137,13 @@ Usage: `hadoop fs -count [-q] [-h] [-v] [-x] [-t [<storage type>]] [-u] [-e] [-s
 
 Count the number of directories, files and bytes under the paths that match the specified file pattern. Get the quota and the usage. The output columns with -count are: DIR\_COUNT, FILE\_COUNT, CONTENT\_SIZE, PATHNAME
 
-The -u and -q options control what columns the output contains.  -q means show quotas, -u limits the output to show quotas and usage only.
+The -u and -q options control what columns the output contains.  -q means show quotas and usage, -u limits the output to show quotas only.
 
 The output columns with -count -q are: QUOTA, REMAINING\_QUOTA, SPACE\_QUOTA, REMAINING\_SPACE\_QUOTA, DIR\_COUNT, FILE\_COUNT, CONTENT\_SIZE, PATHNAME
 
 The output columns with -count -u are: QUOTA, REMAINING\_QUOTA, SPACE\_QUOTA, REMAINING\_SPACE\_QUOTA, PATHNAME
 
-The -t option shows the quota and usage for each storage type. The -t option is ignored if -u or -q option is not given. The list of possible parameters that can be used in -t option(case insensitive except the parameter ""): "", "all", "ram_disk", "ssd", "disk" or "archive".
+The -t option shows the quota and usage for each storage type. The -t option is ignored if -u or -q option is not given. The list of possible parameters that can be used in -t option(case insensitive except the parameter): "", "all", "ram_disk", "ssd", "disk" or "archive".
 
 The -h option shows sizes in human readable format.