Update cheatsheets

tldr/cisco-ios/write

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+---
+syntax: markdown
+tags: [tldr, cisco-ios]
+source: https://github.com/tldr-pages/tldr.git
+---
+# write
+
+> Write data to memory.
+> More information: <https://www.oreilly.com/library/view/cisco-ios-in/0596008694/re869.html#book-content>.
+
+- Write current configuration to memory:
+
+`write memory`
+
+- Delete the configuration in memory:
+
+`write erase`
+
+- Display help:
+
+`write ?`