*: fix errors reported by languagetool (#6069)

pages/common/zsteg.md

@@ -4,7 +4,7 @@
 > It detects LSB steganography, ZLIB-compressed data, OpenStego, Camouflage and LSB with the Eratosthenes set.
 > More information: <https://github.com/zed-0xff/zsteg>.
 
-- Detect embedded data in a PNG image:
+- Detect embedded data in a PNG:
 
 `zsteg {{path/to/image.png}}`
 
@@ -12,7 +12,7 @@
 
 `zsteg --all {{path/to/image.bmp}}`
 
-- Detect embedded data in a PNG image, iterating pixels vertically and using MSB first:
+- Detect embedded data in a PNG, iterating pixels vertically and using MSB first:
 
 `zsteg --msb --order yx {{path/to/image.png}}`
 
@@ -20,7 +20,7 @@
 
 `zsteg --bits {{1,2,3|1-3}} {{path/to/image.bmp}}`
 
-- Detect embedded data in a PNG image, extracting only prime pixels and inverting bits:
+- Detect embedded data in a PNG, extracting only prime pixels and inverting bits:
 
 `zsteg --prime --invert {{path/to/image.png}}`