ispell: add page (#7918)

pages/linux/ispell.md

@@ -0,0 +1,16 @@
+# ispell
+
+> Interactive spell checking.
+> More information: <https://www.cs.hmc.edu/~geoff/ispell.html>.
+
+- Start an interactive session:
+
+`ispell`
+
+- Check for typos in the specified file and interactively apply suggestions:
+
+`ispell {{path/to/file}}`
+
+- Display the version:
+
+`ispell -v`