Fix typos

doc/manual/src/expressions/advanced-attributes.md

@@ -237,7 +237,7 @@ Derivations can declare some infrequently used optional attributes.
   - `preferLocalBuild`\
     If this attribute is set to `true` and [distributed building is
     enabled](../advanced-topics/distributed-builds.md), then, if
-    possible, the derivaton will be built locally instead of forwarded
+    possible, the derivation will be built locally instead of forwarded
     to a remote machine. This is appropriate for trivial builders
     where the cost of doing a download or remote build would exceed
     the cost of building locally.

doc/manual/src/expressions/expression-syntax.md

@@ -26,7 +26,7 @@ elements (referenced from the figure by number):
     called with three arguments: `stdenv`, `fetchurl`, and `perl`. They
     are needed to build Hello, but we don't know how to build them here;
     that's why they are function arguments. `stdenv` is a package that
-    is used by almost all Nix Packages packages; it provides a
+    is used by almost all Nix Packages; it provides a
     “standard” environment consisting of the things you would expect
     in a basic Unix environment: a C/C++ compiler (GCC, to be precise),
     the Bash shell, fundamental Unix tools such as `cp`, `grep`, `tar`,

doc/manual/src/expressions/language-values.md

@@ -64,7 +64,7 @@ Nix has the following basic data types:
     the start of each line. To be precise, it strips from each line a
     number of spaces equal to the minimal indentation of the string as a
     whole (disregarding the indentation of empty lines). For instance,
-    the first and second line are indented two space, while the third
+    the first and second line are indented two spaces, while the third
     line is indented four spaces. Thus, two spaces are stripped from
     each line, so the resulting string is