Update CLI help descriptions

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: arran4

cli/main.go

@@ -61,7 +61,7 @@ func process(input string, output string, args []string, fn func(string, ...any)
 //
 //	input: -i --input (default: "") Input file or - for stdin
 //	output: -o --output (default: "") Output file or - for stdout
-//	args: ... Positional arguments
+//	args: ... String to convert if file/stdin not provided
 func Camel(input string, output string, args ...string) {
 	process(input, output, args, strings2.ToCamel)
 }
@@ -72,7 +72,7 @@ func Camel(input string, output string, args ...string) {
 //
 //	input: -i --input (default: "") Input file or - for stdin
 //	output: -o --output (default: "") Output file or - for stdout
-//	args: ... Positional arguments
+//	args: ... String to convert if file/stdin not provided
 func Snake(input string, output string, args ...string) {
 	process(input, output, args, strings2.ToSnake)
 }
@@ -83,7 +83,7 @@ func Snake(input string, output string, args ...string) {
 //
 //	input: -i --input (default: "") Input file or - for stdin
 //	output: -o --output (default: "") Output file or - for stdout
-//	args: ... Positional arguments
+//	args: ... String to convert if file/stdin not provided
 func Kebab(input string, output string, args ...string) {
 	process(input, output, args, strings2.ToKebab)
 }
@@ -94,7 +94,7 @@ func Kebab(input string, output string, args ...string) {
 //
 //	input: -i --input (default: "") Input file or - for stdin
 //	output: -o --output (default: "") Output file or - for stdout
-//	args: ... Positional arguments
+//	args: ... String to convert if file/stdin not provided
 func Pascal(input string, output string, args ...string) {
 	process(input, output, args, strings2.ToPascal)
 }

cmd/strings2/templates/camel_usage.txt

@@ -9,4 +9,4 @@ Flags:
     --output, -o string   Output file or - for stdout
 
 Positional Arguments:
-    args       Positional arguments
+    args       String to convert if file/stdin not provided

cmd/strings2/templates/kebab_usage.txt

@@ -9,4 +9,4 @@ Flags:
     --output, -o string   Output file or - for stdout
 
 Positional Arguments:
-    args       Positional arguments
+    args       String to convert if file/stdin not provided

cmd/strings2/templates/pascal_usage.txt

@@ -9,4 +9,4 @@ Flags:
     --output, -o string   Output file or - for stdout
 
 Positional Arguments:
-    args       Positional arguments
+    args       String to convert if file/stdin not provided

cmd/strings2/templates/snake_usage.txt

@@ -9,4 +9,4 @@ Flags:
     --output, -o string   Output file or - for stdout
 
 Positional Arguments:
-    args       Positional arguments
+    args       String to convert if file/stdin not provided