chore: reformat for 80 columns; fix spacing (#1021)

* chore: reformat for 80 columns; fix spacing

shell style guide specifies 80 columns

since `echo` adds spaces between its arguments the line that was already
split resulted in an extra space:

`Verify installed headers created only  expected directories.`

* add a missing space

Author: mr-salty

ci/kokoro/docker/build-in-docker-cmake.sh

@@ -32,7 +32,8 @@ fi
 source "${PROJECT_ROOT}/ci/colors.sh"
 
 echo
-echo "${COLOR_YELLOW}Starting docker build $(date) with $(nproc) cores${COLOR_RESET}"
+echo "${COLOR_YELLOW}Starting docker build $(date) with $(nproc)" \
+    "cores${COLOR_RESET}"
 echo
 
 echo "================================================================"
@@ -126,16 +127,17 @@ if [[ "${TEST_INSTALL:-}" = "yes" ]]; then
 
     # Verify only the expected directories are created in the install directory.
     echo
-    echo "${COLOR_YELLOW}Verify installed headers created only" \
-        " expected directories.${COLOR_RESET}"
+    echo "${COLOR_YELLOW}Verify installed headers created only expected" \
+        "directories.${COLOR_RESET}"
     if comm -23 \
         <(find "$HOME/staging/include/google/cloud" -type d | sort) \
         <(echo "$HOME/staging/include/google/cloud" ; \
           echo "$HOME/staging/include/google/cloud/spanner" ; \
           echo "$HOME/staging/include/google/cloud/spanner/internal" ; \
           echo "$HOME/staging/include/google/cloud/spanner/mocks" ; \
           /bin/true) | grep -q "$HOME"; then
-        echo "${COLOR_YELLOW}Installed directories do not match expectation.${COLOR_RESET}"
+        echo "${COLOR_YELLOW}Installed directories do not match" \
+            "expectation.${COLOR_RESET}"
         echo "${COLOR_RED}Found:"
         find "$HOME/staging/include/google/cloud" -type d | sort
         echo "${COLOR_RESET}"