Fix whitespace issues and finish writing some docstrings

Make.inc

@@ -1018,7 +1018,8 @@ USE_BINARYBUILDER_LIBOSXUNWIND ?= $(USE_BINARYBUILDER_LIBUNWIND)
 # parse them.  This means that we cannot use `:=` (since we do not want to evaluate these
 # rules now, we want to evaluate them when we use them, so we use `=`) however we also do
 # not want to re-evaluate them multiple times.  So we define a caching mechanism where the
-# rules are still lazily-evaluated, but 
+# rules are still lazily-evaluated, but we cache the value such that the second time around
+# we don't have to re-evaluate them.
 define hit_cache
 $(if $(_CACHE-$(1)),,$(eval _CACHE-$(1) := $($(1))))$(_CACHE-$(1))
 endef

deps/tools/jll-generate.mk

@@ -90,7 +90,7 @@ $$($(1)_SRC_DIR)/Project.toml: | $$($(1)_SRC_DIR)
 
 $$($(1)_SRC_DIR)/README.md: | $$($(1)_SRC_DIR)
 	@echo "This is an autogenerated package." > "$$@"
- 
+
 UNINSTALL_$(1) := delete-uninstaller $$($(1)_SRC_DIR)
 $(build_prefix)/manifest/$(1): $$($(1)_SRC_DIR)/src/$(1).jl $$($(1)_SRC_DIR)/Project.toml $$($(1)_SRC_DIR)/README.md | $(build_prefix)/manifest
 	@echo '$$(UNINSTALL_$(1))' > "$$@"

stdlib/LinearAlgebra/src/blaslib.jl

@@ -41,7 +41,7 @@ end
     determine_blas_vendor(libblas[]::Ptr)
 
 Given a pointer to a loaded BLAS library, determines its vendor. This currently
-recognizes only two vendor types, `:openblas` or `:mkl`.  If neither can be 
+recognizes only two vendor types, `:openblas` or `:mkl`.
 """
 function determine_blas_vendor(libblas::Ptr)
     vend = :unknown